89747431 has 8 divisors (see below), whose sum is σ = 97729200. Its totient is φ = 82091520.

The previous prime is 89747417. The next prime is 89747443. The reversal of 89747431 is 13474798.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89747431 - 2¹⁹ = 89223143 is a prime.

It is a super-2 number, since 2×89747431² = 16109202742199522, 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 (89748431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80890 + ... + 81991.

It is an arithmetic number, because the mean of its divisors is an integer number (12216150).

Almost surely, 2^89747431 is an apocalyptic number.

89747431 is a deficient number, since it is larger than the sum of its proper divisors (7981769).

89747431 is a wasteful number, since it uses less digits than its factorization.

89747431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162929.

The product of its digits is 169344, while the sum is 43.

The square root of 89747431 is about 9473.5120731437. The cubic root of 89747431 is about 447.7208730406.

The spelling of 89747431 in words is "eighty-nine million, seven hundred forty-seven thousand, four hundred thirty-one".