39974079 has 16 divisors (see below), whose sum is σ = 54379520. Its totient is φ = 26114400.

The previous prime is 39974071. The next prime is 39974087. The reversal of 39974079 is 97047993.

It is an interprime number because it is at equal distance from previous prime (39974071) and next prime (39974087).

It is not a de Polignac number, because 39974079 - 2³ = 39974071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39974071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35229 + ... + 36345.

It is an arithmetic number, because the mean of its divisors is an integer number (3398720).

Almost surely, 2^39974079 is an apocalyptic number.

39974079 is a deficient number, since it is larger than the sum of its proper divisors (14405441).

39974079 is a wasteful number, since it uses less digits than its factorization.

39974079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350.

The product of its (nonzero) digits is 428652, while the sum is 48.

The square root of 39974079 is about 6322.5057532595. The cubic root of 39974079 is about 341.9212995614.

The spelling of 39974079 in words is "thirty-nine million, nine hundred seventy-four thousand, seventy-nine".