69899457 has 4 divisors (see below), whose sum is σ = 93199280. Its totient is φ = 46599636.

The previous prime is 69899419. The next prime is 69899477. The reversal of 69899457 is 75499896.

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 not a de Polignac number, because 69899457 - 2¹⁵ = 69866689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69899397 and 69899406.

It is not an unprimeable number, because it can be changed into a prime (69899477) 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, 11649907 + ... + 11649912.

It is an arithmetic number, because the mean of its divisors is an integer number (23299820).

Almost surely, 2^69899457 is an apocalyptic number.

It is an amenable number.

69899457 is a deficient number, since it is larger than the sum of its proper divisors (23299823).

69899457 is a wasteful number, since it uses less digits than its factorization.

69899457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23299822.

The product of its digits is 4898880, while the sum is 57.

The square root of 69899457 is about 8360.5895127078. The cubic root of 69899457 is about 411.9311181070.

The spelling of 69899457 in words is "sixty-nine million, eight hundred ninety-nine thousand, four hundred fifty-seven".