39974156 has 6 divisors (see below), whose sum is σ = 69954780. Its totient is φ = 19987076.

The previous prime is 39974153. The next prime is 39974173. The reversal of 39974156 is 65147993.

It is not an unprimeable number, because it can be changed into a prime (39974153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996766 + ... + 4996773.

It is an arithmetic number, because the mean of its divisors is an integer number (11659130).

Almost surely, 2^39974156 is an apocalyptic number.

It is an amenable number.

39974156 is a deficient number, since it is larger than the sum of its proper divisors (29980624).

39974156 is a wasteful number, since it uses less digits than its factorization.

39974156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9993543 (or 9993541 counting only the distinct ones).

The product of its digits is 204120, while the sum is 44.

The square root of 39974156 is about 6322.5118426145. The cubic root of 39974156 is about 341.9215191030.

The spelling of 39974156 in words is "thirty-nine million, nine hundred seventy-four thousand, one hundred fifty-six".