39974497 has 4 divisors (see below), whose sum is σ = 42325956. Its totient is φ = 37623040.

The previous prime is 39974489. The next prime is 39974521. The reversal of 39974497 is 79447993.

39974497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15610401 + 24364096 = 3951^2 + 4936^2 .

It is not a de Polignac number, because 39974497 - 2³ = 39974489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39974797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1175704 + ... + 1175737.

It is an arithmetic number, because the mean of its divisors is an integer number (10581489).

Almost surely, 2^39974497 is an apocalyptic number.

It is an amenable number.

39974497 is a deficient number, since it is larger than the sum of its proper divisors (2351459).

39974497 is a wasteful number, since it uses less digits than its factorization.

39974497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351458.

The product of its digits is 1714608, while the sum is 52.

The square root of 39974497 is about 6322.5388096871. The cubic root of 39974497 is about 341.9224913554.

The spelling of 39974497 in words is "thirty-nine million, nine hundred seventy-four thousand, four hundred ninety-seven".