40639372 has 6 divisors (see below), whose sum is σ = 71118908. Its totient is φ = 20319684.

The previous prime is 40639363. The next prime is 40639381. The reversal of 40639372 is 27393604.

It is an interprime number because it is at equal distance from previous prime (40639363) and next prime (40639381).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5079918 + ... + 5079925.

Almost surely, 2^40639372 is an apocalyptic number.

It is an amenable number.

40639372 is a deficient number, since it is larger than the sum of its proper divisors (30479536).

40639372 is a wasteful number, since it uses less digits than its factorization.

40639372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10159847 (or 10159845 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 40639372 is about 6374.9017247327. The cubic root of 40639372 is about 343.8077504295.

The spelling of 40639372 in words is "forty million, six hundred thirty-nine thousand, three hundred seventy-two".