39920974 has 8 divisors (see below), whose sum is σ = 60283800. Its totient is φ = 19826376.

The previous prime is 39920971. The next prime is 39920977. The reversal of 39920974 is 47902993.

It is an interprime number because it is at equal distance from previous prime (39920971) and next prime (39920977).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 39920974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39920971) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 66684 + ... + 67279.

It is an arithmetic number, because the mean of its divisors is an integer number (7535475).

Almost surely, 2^39920974 is an apocalyptic number.

39920974 is a deficient number, since it is larger than the sum of its proper divisors (20362826).

39920974 is a wasteful number, since it uses less digits than its factorization.

39920974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134114.

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 39920974 is about 6318.3046776806. The cubic root of 39920974 is about 341.7698199212.

The spelling of 39920974 in words is "thirty-nine million, nine hundred twenty thousand, nine hundred seventy-four".