39994938 has 32 divisors (see below), whose sum is σ = 89147520. Its totient is φ = 13291200.

The previous prime is 39994919. The next prime is 39994949. The reversal of 39994938 is 83949993.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20731 + ... + 22577.

It is an arithmetic number, because the mean of its divisors is an integer number (2785860).

Almost surely, 2^39994938 is an apocalyptic number.

39994938 is an abundant number, since it is smaller than the sum of its proper divisors (49152582).

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

39994938 is a wasteful number, since it uses less digits than its factorization.

39994938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259 (or 2253 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 39994938 is about 6324.1551214372. The cubic root of 39994938 is about 341.9807622297.

The spelling of 39994938 in words is "thirty-nine million, nine hundred ninety-four thousand, nine hundred thirty-eight".