391374046 has 32 divisors (see below), whose sum is σ = 722684160. Its totient is φ = 155203776.

The previous prime is 391374041. The next prime is 391374059. The reversal of 391374046 is 640473193.

It is a junction number, because it is equal to n+sod(n) for n = 391373996 and 391374014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391374041) 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, 5671 + ... + 28546.

It is an arithmetic number, because the mean of its divisors is an integer number (22583880).

Almost surely, 2^391374046 is an apocalyptic number.

391374046 is a deficient number, since it is larger than the sum of its proper divisors (331310114).

391374046 is a wasteful number, since it uses less digits than its factorization.

391374046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34288.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 391374046 is about 19783.1758320043. The cubic root of 391374046 is about 731.4713839548.

The spelling of 391374046 in words is "three hundred ninety-one million, three hundred seventy-four thousand, forty-six".