76889231 has 2 divisors, whose sum is σ = 76889232. Its totient is φ = 76889230.

The previous prime is 76889177. The next prime is 76889251. The reversal of 76889231 is 13298867.

It is a strong prime.

It is an emirp because it is prime and its reverse (13298867) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76889231 - 2²⁶ = 9780367 is a prime.

It is a super-2 number, since 2×76889231² = 11823907687542722, 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 (76889251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38444615 + 38444616.

It is an arithmetic number, because the mean of its divisors is an integer number (38444616).

Almost surely, 2^76889231 is an apocalyptic number.

76889231 is a deficient number, since it is larger than the sum of its proper divisors (1).

76889231 is an equidigital number, since it uses as much as digits as its factorization.

76889231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 76889231 is about 8768.6504662918. The cubic root of 76889231 is about 425.2279856367.

The spelling of 76889231 in words is "seventy-six million, eight hundred eighty-nine thousand, two hundred thirty-one".