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169471417 = 1973532437
BaseRepresentation
bin10100001100111…
…10110110111001
3102210220001002011
422012132312321
5321341041132
624452205521
74125324523
oct1206366671
9383801064
10169471417
1187731425
12489098a1
132915885b
1418716a13
15ed28b47
hexa19edb9

169471417 has 8 divisors (see below), whose sum is σ = 170884296. Its totient is φ = 168064512.

The previous prime is 169471403. The next prime is 169471483. The reversal of 169471417 is 714174961.

It can be written as a sum of positive squares in 4 ways, for example, as 110166016 + 59305401 = 10496^2 + 7701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 169471417 - 215 = 169438649 is a prime.

It is a super-2 number, since 2×1694714172 = 57441122359975778, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169471417.

It is not an unprimeable number, because it can be changed into a prime (169471117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68323 + ... + 70759.

It is an arithmetic number, because the mean of its divisors is an integer number (21360537).

Almost surely, 2169471417 is an apocalyptic number.

It is an amenable number.

169471417 is a deficient number, since it is larger than the sum of its proper divisors (1412879).

169471417 is a wasteful number, since it uses less digits than its factorization.

169471417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987.

The product of its digits is 42336, while the sum is 40.

The square root of 169471417 is about 13018.1187965082. The cubic root of 169471417 is about 553.3910787544.

The spelling of 169471417 in words is "one hundred sixty-nine million, four hundred seventy-one thousand, four hundred seventeen".

Divisors: 1 197 353 2437 69541 480089 860261 169471417