391464899 has 32 divisors (see below), whose sum is σ = 497995776. Its totient is φ = 299819520.

The previous prime is 391464893. The next prime is 391464901. The reversal of 391464899 is 998464193.

It is not a de Polignac number, because 391464899 - 2⁸ = 391464643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 391464899.

It is not an unprimeable number, because it can be changed into a prime (391464893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 429254 + ... + 430164.

It is an arithmetic number, because the mean of its divisors is an integer number (15562368).

Almost surely, 2^391464899 is an apocalyptic number.

391464899 is a deficient number, since it is larger than the sum of its proper divisors (106530877).

391464899 is a wasteful number, since it uses less digits than its factorization.

391464899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1115.

The product of its digits is 1679616, while the sum is 53.

The square root of 391464899 is about 19785.4719175460. The cubic root of 391464899 is about 731.5279804756.

The spelling of 391464899 in words is "three hundred ninety-one million, four hundred sixty-four thousand, eight hundred ninety-nine".