39387912 has 64 divisors (see below), whose sum is σ = 109771200. Its totient is φ = 11704320.

The previous prime is 39387863. The next prime is 39387923. The reversal of 39387912 is 21978393.

It is a super-2 number, since 2×39387912² = 3102815223439488, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5212 + ... + 10292.

It is an arithmetic number, because the mean of its divisors is an integer number (1715175).

Almost surely, 2^39387912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39387912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54885600).

39387912 is an abundant number, since it is smaller than the sum of its proper divisors (70383288).

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

39387912 is a wasteful number, since it uses less digits than its factorization.

39387912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126 (or 5122 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 39387912 is about 6275.9789674600. The cubic root of 39387912 is about 340.2417887970.

The spelling of 39387912 in words is "thirty-nine million, three hundred eighty-seven thousand, nine hundred twelve".