39893742 has 48 divisors (see below), whose sum is σ = 103133520. Its totient is φ = 11397456.

The previous prime is 39893731. The next prime is 39893759. The reversal of 39893742 is 24739893.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4893 + ... + 10184.

It is an arithmetic number, because the mean of its divisors is an integer number (2148615).

Almost surely, 2^39893742 is an apocalyptic number.

39893742 is an abundant number, since it is smaller than the sum of its proper divisors (63239778).

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

39893742 is a wasteful number, since it uses less digits than its factorization.

39893742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15102 (or 15089 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 39893742 is about 6316.1493015919. The cubic root of 39893742 is about 341.6920897468.

The spelling of 39893742 in words is "thirty-nine million, eight hundred ninety-three thousand, seven hundred forty-two".