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70969469 = 405117519
BaseRepresentation
bin1000011101011…
…10100001111101
311221112121210212
410032232201331
5121132010334
611013042205
71521142034
oct416564175
9157477725
1070969469
113707345a
121b926365
131191ab8c
1495d571b
15636cece
hex43ae87d

70969469 has 4 divisors (see below), whose sum is σ = 70991040. Its totient is φ = 70947900.

The previous prime is 70969453. The next prime is 70969477. The reversal of 70969469 is 96496907.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96496907 = 137422839.

It is a cyclic number.

It is not a de Polignac number, because 70969469 - 24 = 70969453 is a prime.

It is a super-2 number, since 2×709694692 = 10073331060283922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70969669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4709 + ... + 12810.

It is an arithmetic number, because the mean of its divisors is an integer number (17747760).

Almost surely, 270969469 is an apocalyptic number.

It is an amenable number.

70969469 is a deficient number, since it is larger than the sum of its proper divisors (21571).

70969469 is a wasteful number, since it uses less digits than its factorization.

70969469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21570.

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 70969469 is about 8424.3378968320. The cubic root of 70969469 is about 414.0224127675.

The spelling of 70969469 in words is "seventy million, nine hundred sixty-nine thousand, four hundred sixty-nine".

Divisors: 1 4051 17519 70969469