39804140 has 24 divisors (see below), whose sum is σ = 88506432. Its totient is φ = 14984960.

The previous prime is 39804139. The next prime is 39804151. The reversal of 39804140 is 4140893.

It is a super-2 number, since 2×39804140² = 3168739122279200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58196 + ... + 58875.

It is an arithmetic number, because the mean of its divisors is an integer number (3687768).

Almost surely, 2^39804140 is an apocalyptic number.

It is an amenable number.

39804140 is an abundant number, since it is smaller than the sum of its proper divisors (48702292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39804140 is a wasteful number, since it uses less digits than its factorization.

39804140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117097 (or 117095 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 39804140 is about 6309.0522267612. The cubic root of 39804140 is about 341.4360826364.

The spelling of 39804140 in words is "thirty-nine million, eight hundred four thousand, one hundred forty".