391914396 has 48 divisors (see below), whose sum is σ = 1075848480. Its totient is φ = 122952960.

The previous prime is 391914377. The next prime is 391914401. The reversal of 391914396 is 693419193.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104895 + ... + 108566.

It is an arithmetic number, because the mean of its divisors is an integer number (22413510).

Almost surely, 2^391914396 is an apocalyptic number.

391914396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

391914396 is an abundant number, since it is smaller than the sum of its proper divisors (683934084).

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

391914396 is a wasteful number, since it uses less digits than its factorization.

391914396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213491 (or 213483 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 391914396 is about 19796.8279277262. The cubic root of 391914396 is about 731.8078641115.

The spelling of 391914396 in words is "three hundred ninety-one million, nine hundred fourteen thousand, three hundred ninety-six".