391541364 has 30 divisors (see below), whose sum is σ = 1023567314. Its totient is φ = 130513680.

The previous prime is 391541333. The next prime is 391541387. The reversal of 391541364 is 463145193.

It can be written as a sum of positive squares in only one way, i.e., 277222500 + 114318864 = 16650^2 + 10692^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 603907 + ... + 604554.

Almost surely, 2^391541364 is an apocalyptic number.

It is an amenable number.

391541364 is an abundant number, since it is smaller than the sum of its proper divisors (632025950).

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

391541364 is a wasteful number, since it uses less digits than its factorization.

391541364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208477 (or 1208466 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 391541364 is about 19787.4041753839. The cubic root of 391541364 is about 731.5756072620.

The spelling of 391541364 in words is "three hundred ninety-one million, five hundred forty-one thousand, three hundred sixty-four".