39099942 has 64 divisors (see below), whose sum is σ = 101376000. Its totient is φ = 11166120.

The previous prime is 39099923. The next prime is 39099953. The reversal of 39099942 is 24999093.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17467 + ... + 19577.

It is an arithmetic number, because the mean of its divisors is an integer number (1584000).

Almost surely, 2^39099942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39099942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50688000).

39099942 is an abundant number, since it is smaller than the sum of its proper divisors (62276058).

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

39099942 is a wasteful number, since it uses less digits than its factorization.

39099942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 39099942 is about 6252.9946425693. The cubic root of 39099942 is about 339.4105762283.

The spelling of 39099942 in words is "thirty-nine million, ninety-nine thousand, nine hundred forty-two".