89696891 has 4 divisors (see below), whose sum is σ = 94417800. Its totient is φ = 84975984.

The previous prime is 89696861. The next prime is 89696897. The reversal of 89696891 is 19869698.

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 89696891 - 2²² = 85502587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89696897) 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, 2360426 + ... + 2360463.

It is an arithmetic number, because the mean of its divisors is an integer number (23604450).

Almost surely, 2^89696891 is an apocalyptic number.

89696891 is a deficient number, since it is larger than the sum of its proper divisors (4720909).

89696891 is a wasteful number, since it uses less digits than its factorization.

89696891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4720908.

The product of its digits is 1679616, while the sum is 56.

The square root of 89696891 is about 9470.8442601491. The cubic root of 89696891 is about 447.6368146948.

The spelling of 89696891 in words is "eighty-nine million, six hundred ninety-six thousand, eight hundred ninety-one".