391090469013 has 6 divisors (see below), whose sum is σ = 564908455254. Its totient is φ = 260726979336.

The previous prime is 391090468973. The next prime is 391090469017. The reversal of 391090469013 is 310964090193.

391090469013 is a `hidden beast` number, since 3 + 91 + 0 + 90 + 469 + 0 + 13 = 666.

It can be written as a sum of positive squares in only one way, i.e., 352714834404 + 38375634609 = 593898^2 + 195897^2 .

It is not a de Polignac number, because 391090469013 - 2⁹ = 391090468501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 391090469013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391090469017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21727248270 + ... + 21727248287.

It is an arithmetic number, because the mean of its divisors is an integer number (94151409209).

Almost surely, 2^391090469013 is an apocalyptic number.

It is an amenable number.

391090469013 is a deficient number, since it is larger than the sum of its proper divisors (173817986241).

391090469013 is a wasteful number, since it uses less digits than its factorization.

391090469013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43454496563 (or 43454496560 counting only the distinct ones).

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

The spelling of 391090469013 in words is "three hundred ninety-one billion, ninety million, four hundred sixty-nine thousand, thirteen".