40679864 has 16 divisors (see below), whose sum is σ = 76734000. Its totient is φ = 20217472.

The previous prime is 40679819. The next prime is 40679869. The reversal of 40679864 is 46897604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40679869) 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, 13889 + ... + 16560.

It is an arithmetic number, because the mean of its divisors is an integer number (4795875).

Almost surely, 2^40679864 is an apocalyptic number.

It is an amenable number.

40679864 is a deficient number, since it is larger than the sum of its proper divisors (36054136).

40679864 is a wasteful number, since it uses less digits than its factorization.

40679864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30622 (or 30618 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 40679864 is about 6378.0768261287. The cubic root of 40679864 is about 343.9218995223.

It can be divided in two parts, 4067 and 9864, that added together give a palindrome (13931).

The spelling of 40679864 in words is "forty million, six hundred seventy-nine thousand, eight hundred sixty-four".