89279231 has 2 divisors, whose sum is σ = 89279232. Its totient is φ = 89279230.

The previous prime is 89279227. The next prime is 89279249. The reversal of 89279231 is 13297298.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89279231 - 2² = 89279227 is a prime.

It is a super-2 number, since 2×89279231² = 15941562175902722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89279221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44639615 + 44639616.

It is an arithmetic number, because the mean of its divisors is an integer number (44639616).

Almost surely, 2^89279231 is an apocalyptic number.

89279231 is a deficient number, since it is larger than the sum of its proper divisors (1).

89279231 is an equidigital number, since it uses as much as digits as its factorization.

89279231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 89279231 is about 9448.7687557692. The cubic root of 89279231 is about 446.9409491467.

The spelling of 89279231 in words is "eighty-nine million, two hundred seventy-nine thousand, two hundred thirty-one".