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244990169 = 1671467007
BaseRepresentation
bin11101001101001…
…00000011011001
3122001222210022222
432212210003121
51000204141134
640150553425
76033245024
oct1646440331
9561883288
10244990169
11116321816
126a068875
133b9aa2c8
14247741bb
1516794a2e
hexe9a40d9

244990169 has 4 divisors (see below), whose sum is σ = 246457344. Its totient is φ = 243522996.

The previous prime is 244990153. The next prime is 244990189. The reversal of 244990169 is 961099442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 244990169 - 24 = 244990153 is a prime.

It is a super-2 number, since 2×2449901692 = 120040365813297122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244990189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 733337 + ... + 733670.

It is an arithmetic number, because the mean of its divisors is an integer number (61614336).

Almost surely, 2244990169 is an apocalyptic number.

It is an amenable number.

244990169 is a deficient number, since it is larger than the sum of its proper divisors (1467175).

244990169 is a wasteful number, since it uses less digits than its factorization.

244990169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467174.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 244990169 is about 15652.1617995726. The cubic root of 244990169 is about 625.7241049646.

The spelling of 244990169 in words is "two hundred forty-four million, nine hundred ninety thousand, one hundred sixty-nine".

Divisors: 1 167 1467007 244990169