40124979 has 24 divisors (see below), whose sum is σ = 61261200. Its totient is φ = 25237440.

The previous prime is 40124963. The next prime is 40125023. The reversal of 40124979 is 97942104.

40124979 is a `hidden beast` number, since 401 + 249 + 7 + 9 = 666.

It is not a de Polignac number, because 40124979 - 2⁴ = 40124963 is a prime.

It is a super-2 number, since 2×40124979² = 3220027879500882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40164979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78577 + ... + 79085.

It is an arithmetic number, because the mean of its divisors is an integer number (2552550).

Almost surely, 2^40124979 is an apocalyptic number.

40124979 is a deficient number, since it is larger than the sum of its proper divisors (21136221).

40124979 is a wasteful number, since it uses less digits than its factorization.

40124979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 40124979 is about 6334.4280720520. The cubic root of 40124979 is about 342.3510041538.

The spelling of 40124979 in words is "forty million, one hundred twenty-four thousand, nine hundred seventy-nine".