56969999 has 4 divisors (see below), whose sum is σ = 59968440. Its totient is φ = 53971560.

The previous prime is 56969993. The next prime is 56970013. The reversal of 56969999 is 99996965.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56969999 - 2⁸ = 56969743 is a prime.

It is a Duffinian number.

56969999 is a modest number, since divided by 9999 gives 5696 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56969993) 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, 1499192 + ... + 1499229.

It is an arithmetic number, because the mean of its divisors is an integer number (14992110).

Almost surely, 2^56969999 is an apocalyptic number.

56969999 is a deficient number, since it is larger than the sum of its proper divisors (2998441).

56969999 is a wasteful number, since it uses less digits than its factorization.

56969999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998440.

The product of its digits is 10628820, while the sum is 62.

The square root of 56969999 is about 7547.8473090014. The cubic root of 56969999 is about 384.7825814639.

The spelling of 56969999 in words is "fifty-six million, nine hundred sixty-nine thousand, nine hundred ninety-nine".