56979999 has 12 divisors (see below), whose sum is σ = 82378296. Its totient is φ = 37952592.

The previous prime is 56979991. The next prime is 56980051. The reversal of 56979999 is 99997965.

It is not a de Polignac number, because 56979999 - 2³ = 56979991 is a prime.

56979999 is a modest number, since divided by 9999 gives 5697 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56979991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11629 + ... + 15785.

It is an arithmetic number, because the mean of its divisors is an integer number (6864858).

Almost surely, 2^56979999 is an apocalyptic number.

56979999 is a deficient number, since it is larger than the sum of its proper divisors (25398297).

56979999 is a wasteful number, since it uses less digits than its factorization.

56979999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686 (or 5683 counting only the distinct ones).

The product of its digits is 12400290, while the sum is 63.

The square root of 56979999 is about 7548.5097204680. The cubic root of 56979999 is about 384.8050939019.

The spelling of 56979999 in words is "fifty-six million, nine hundred seventy-nine thousand, nine hundred ninety-nine".