39400812 has 36 divisors (see below), whose sum is σ = 108651816. Its totient is φ = 11939520.

The previous prime is 39400799. The next prime is 39400841. The reversal of 39400812 is 21800493.

39400812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49353 + ... + 50144.

It is an arithmetic number, because the mean of its divisors is an integer number (3018106).

Almost surely, 2^39400812 is an apocalyptic number.

It is an amenable number.

39400812 is an abundant number, since it is smaller than the sum of its proper divisors (69251004).

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

39400812 is a wasteful number, since it uses less digits than its factorization.

39400812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99518 (or 99513 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 39400812 is about 6277.0066114351. The cubic root of 39400812 is about 340.2789291258.

The spelling of 39400812 in words is "thirty-nine million, four hundred thousand, eight hundred twelve".