39940912 has 20 divisors (see below), whose sum is σ = 84420936. Its totient is φ = 18154880.

The previous prime is 39940897. The next prime is 39940919. The reversal of 39940912 is 21904993.

It is not an unprimeable number, because it can be changed into a prime (39940919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113293 + ... + 113644.

Almost surely, 2^39940912 is an apocalyptic number.

It is an amenable number.

39940912 is an abundant number, since it is smaller than the sum of its proper divisors (44480024).

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

39940912 is a wasteful number, since it uses less digits than its factorization.

39940912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226956 (or 226950 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 39940912 is about 6319.8822773846. The cubic root of 39940912 is about 341.8267079166.

The spelling of 39940912 in words is "thirty-nine million, nine hundred forty thousand, nine hundred twelve".