891476231 has 2 divisors, whose sum is σ = 891476232. Its totient is φ = 891476230.

The previous prime is 891476167. The next prime is 891476263. The reversal of 891476231 is 132674198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 891476231 - 2⁶ = 891476167 is a prime.

It is a super-2 number, since 2×891476231² = 1589459740875930722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (891476281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 445738115 + 445738116.

It is an arithmetic number, because the mean of its divisors is an integer number (445738116).

Almost surely, 2^891476231 is an apocalyptic number.

891476231 is a deficient number, since it is larger than the sum of its proper divisors (1).

891476231 is an equidigital number, since it uses as much as digits as its factorization.

891476231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 41.

The square root of 891476231 is about 29857.5992169498. The cubic root of 891476231 is about 962.4317081135.

The spelling of 891476231 in words is "eight hundred ninety-one million, four hundred seventy-six thousand, two hundred thirty-one".