39408939376 has 80 divisors (see below), whose sum is σ = 83319667200. Its totient is φ = 17985832704.

The previous prime is 39408939373. The next prime is 39408939413. The reversal of 39408939376 is 67393980493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39408939373) 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, 4430005 + ... + 4438891.

It is an arithmetic number, because the mean of its divisors is an integer number (1041495840).

Almost surely, 2^39408939376 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 39408939376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41659833600).

39408939376 is an abundant number, since it is smaller than the sum of its proper divisors (43910727824).

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

39408939376 is a wasteful number, since it uses less digits than its factorization.

39408939376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9446 (or 9440 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 61.

The spelling of 39408939376 in words is "thirty-nine billion, four hundred eight million, nine hundred thirty-nine thousand, three hundred seventy-six".