89219891 has 8 divisors (see below), whose sum is σ = 92273664. Its totient is φ = 86177160.

The previous prime is 89219849. The next prime is 89219903. The reversal of 89219891 is 19891298.

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 89219891 - 2¹⁸ = 88957747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89219821) 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 7 ways as a sum of consecutive naturals, for example, 15746 + ... + 20648.

It is an arithmetic number, because the mean of its divisors is an integer number (11534208).

Almost surely, 2^89219891 is an apocalyptic number.

89219891 is a deficient number, since it is larger than the sum of its proper divisors (3053773).

89219891 is a wasteful number, since it uses less digits than its factorization.

89219891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5521.

The product of its digits is 93312, while the sum is 47.

The square root of 89219891 is about 9445.6281421619. The cubic root of 89219891 is about 446.8419065000.

The spelling of 89219891 in words is "eighty-nine million, two hundred nineteen thousand, eight hundred ninety-one".