390796888091 has 4 divisors (see below), whose sum is σ = 392418452184. Its totient is φ = 389175324000.

The previous prime is 390796888061. The next prime is 390796888213. The reversal of 390796888091 is 190888697093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190888697093 = 347 ⋅550111519.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-390796888091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (390796888051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810781685 + ... + 810782166.

It is an arithmetic number, because the mean of its divisors is an integer number (98104613046).

Almost surely, 2^390796888091 is an apocalyptic number.

390796888091 is a deficient number, since it is larger than the sum of its proper divisors (1621564093).

390796888091 is a wasteful number, since it uses less digits than its factorization.

390796888091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621564092.

The product of its (nonzero) digits is 47029248, while the sum is 68.

The spelling of 390796888091 in words is "three hundred ninety billion, seven hundred ninety-six million, eight hundred eighty-eight thousand, ninety-one".