89890571 has 4 divisors (see below), whose sum is σ = 91414200. Its totient is φ = 88366944.

The previous prime is 89890553. The next prime is 89890583. The reversal of 89890571 is 17509898.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89890571 - 2²² = 85696267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89890771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761726 + ... + 761843.

It is an arithmetic number, because the mean of its divisors is an integer number (22853550).

Almost surely, 2^89890571 is an apocalyptic number.

89890571 is a deficient number, since it is larger than the sum of its proper divisors (1523629).

89890571 is a wasteful number, since it uses less digits than its factorization.

89890571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523628.

The product of its (nonzero) digits is 181440, while the sum is 47.

The square root of 89890571 is about 9481.0638116195. The cubic root of 89890571 is about 447.9587729786.

The spelling of 89890571 in words is "eighty-nine million, eight hundred ninety thousand, five hundred seventy-one".