39812916 has 48 divisors (see below), whose sum is σ = 109142208. Its totient is φ = 11136000.

The previous prime is 39812909. The next prime is 39812917. The reversal of 39812916 is 61921893.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39812917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9885 + ... + 13316.

It is an arithmetic number, because the mean of its divisors is an integer number (2273796).

Almost surely, 2^39812916 is an apocalyptic number.

It is an amenable number.

39812916 is an abundant number, since it is smaller than the sum of its proper divisors (69329292).

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

39812916 is a wasteful number, since it uses less digits than its factorization.

39812916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23232 (or 23230 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 39812916 is about 6309.7476970161. The cubic root of 39812916 is about 341.4611740203.

The spelling of 39812916 in words is "thirty-nine million, eight hundred twelve thousand, nine hundred sixteen".