89742231 has 6 divisors (see below), whose sum is σ = 129627680. Its totient is φ = 59828148.

The previous prime is 89742221. The next prime is 89742259. The reversal of 89742231 is 13224798.

It is not a de Polignac number, because 89742231 - 2⁵ = 89742199 is a prime.

It is a super-2 number, since 2×89742231² = 16107336049714722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89742221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4985671 + ... + 4985688.

Almost surely, 2^89742231 is an apocalyptic number.

89742231 is a deficient number, since it is larger than the sum of its proper divisors (39885449).

89742231 is a wasteful number, since it uses less digits than its factorization.

89742231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971365 (or 9971362 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 89742231 is about 9473.2376197370. The cubic root of 89742231 is about 447.7122258348.

The spelling of 89742231 in words is "eighty-nine million, seven hundred forty-two thousand, two hundred thirty-one".