89431385 has 8 divisors (see below), whose sum is σ = 112966080. Its totient is φ = 67779504.

The previous prime is 89431379. The next prime is 89431393. The reversal of 89431385 is 58313498.

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 89431385 - 2⁴ = 89431369 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470597 + ... + 470786.

It is an arithmetic number, because the mean of its divisors is an integer number (14120760).

Almost surely, 2^89431385 is an apocalyptic number.

It is an amenable number.

89431385 is a deficient number, since it is larger than the sum of its proper divisors (23534695).

89431385 is a wasteful number, since it uses less digits than its factorization.

89431385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941407.

The product of its digits is 103680, while the sum is 41.

The square root of 89431385 is about 9456.8168534661. The cubic root of 89431385 is about 447.1947045353.

The spelling of 89431385 in words is "eighty-nine million, four hundred thirty-one thousand, three hundred eighty-five".