89623991 has 8 divisors (see below), whose sum is σ = 92080800. Its totient is φ = 87180160.

The previous prime is 89623987. The next prime is 89624011. The reversal of 89623991 is 19932698.

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 89623991 - 2² = 89623987 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89623951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11675 + ... + 17763.

It is an arithmetic number, because the mean of its divisors is an integer number (11510100).

Almost surely, 2^89623991 is an apocalyptic number.

89623991 is a deficient number, since it is larger than the sum of its proper divisors (2456809).

89623991 is a wasteful number, since it uses less digits than its factorization.

89623991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489.

The product of its digits is 209952, while the sum is 47.

The square root of 89623991 is about 9466.9948241245. The cubic root of 89623991 is about 447.5155114626.

The spelling of 89623991 in words is "eighty-nine million, six hundred twenty-three thousand, nine hundred ninety-one".