89509971 has 4 divisors (see below), whose sum is σ = 119346632. Its totient is φ = 59673312.

The previous prime is 89509967. The next prime is 89509991. The reversal of 89509971 is 17990598.

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

It is not a de Polignac number, because 89509971 - 2² = 89509967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89509971.

It is not an unprimeable number, because it can be changed into a prime (89509991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14918326 + ... + 14918331.

It is an arithmetic number, because the mean of its divisors is an integer number (29836658).

Almost surely, 2^89509971 is an apocalyptic number.

89509971 is a deficient number, since it is larger than the sum of its proper divisors (29836661).

89509971 is a wasteful number, since it uses less digits than its factorization.

89509971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29836660.

The product of its (nonzero) digits is 204120, while the sum is 48.

The square root of 89509971 is about 9460.9709332605. The cubic root of 89509971 is about 447.3256539191.

The spelling of 89509971 in words is "eighty-nine million, five hundred nine thousand, nine hundred seventy-one".