390943674 has 48 divisors (see below), whose sum is σ = 926269344. Its totient is φ = 118183200.

The previous prime is 390943669. The next prime is 390943691. The reversal of 390943674 is 476349093.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89137 + ... + 93419.

It is an arithmetic number, because the mean of its divisors is an integer number (19297278).

Almost surely, 2^390943674 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 390943674, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463134672).

390943674 is an abundant number, since it is smaller than the sum of its proper divisors (535325670).

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

390943674 is a wasteful number, since it uses less digits than its factorization.

390943674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763 (or 4760 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The square root of 390943674 is about 19772.2956178588. The cubic root of 390943674 is about 731.2031663190.

The spelling of 390943674 in words is "three hundred ninety million, nine hundred forty-three thousand, six hundred seventy-four".