39684942 has 48 divisors (see below), whose sum is σ = 96353712. Its totient is φ = 11698560.

The previous prime is 39684923. The next prime is 39684943. The reversal of 39684942 is 24948693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39684943) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4618 + ... + 10034.

It is an arithmetic number, because the mean of its divisors is an integer number (2007369).

Almost surely, 2^39684942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39684942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48176856).

39684942 is an abundant number, since it is smaller than the sum of its proper divisors (56668770).

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

39684942 is a wasteful number, since it uses less digits than its factorization.

39684942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5473 (or 5470 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 39684942 is about 6299.5985586385. The cubic root of 39684942 is about 341.0949188670.

The spelling of 39684942 in words is "thirty-nine million, six hundred eighty-four thousand, nine hundred forty-two".