39402944 has 56 divisors (see below), whose sum is σ = 89964768. Its totient is φ = 16773120.

The previous prime is 39402943. The next prime is 39402949. The reversal of 39402944 is 44920493.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39402943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125732 + ... + 126044.

Almost surely, 2^39402944 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 39402944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44982384).

39402944 is an abundant number, since it is smaller than the sum of its proper divisors (50561824).

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

39402944 is a wasteful number, since it uses less digits than its factorization.

39402944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 39402944 is about 6277.1764353091. The cubic root of 39402944 is about 340.2850665762.

The spelling of 39402944 in words is "thirty-nine million, four hundred two thousand, nine hundred forty-four".