891711379 has 16 divisors (see below), whose sum is σ = 980556192. Its totient is φ = 805828608.

The previous prime is 891711371. The next prime is 891711383. The reversal of 891711379 is 973117198.

It is not a de Polignac number, because 891711379 - 2³ = 891711371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891711371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396432 + ... + 398674.

It is an arithmetic number, because the mean of its divisors is an integer number (61284762).

Almost surely, 2^891711379 is an apocalyptic number.

891711379 is a deficient number, since it is larger than the sum of its proper divisors (88844813).

891711379 is a wasteful number, since it uses less digits than its factorization.

891711379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886.

The product of its digits is 95256, while the sum is 46.

The square root of 891711379 is about 29861.5367822890. The cubic root of 891711379 is about 962.5163220710.

The spelling of 891711379 in words is "eight hundred ninety-one million, seven hundred eleven thousand, three hundred seventy-nine".