89211989 has 4 divisors (see below), whose sum is σ = 89710560. Its totient is φ = 88713420.

The previous prime is 89211979. The next prime is 89212001. The reversal of 89211989 is 98911298.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89211989 is a prime.

It is a super-2 number, since 2×89211989² = 15917557962672242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89211929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249017 + ... + 249374.

It is an arithmetic number, because the mean of its divisors is an integer number (22427640).

Almost surely, 2^89211989 is an apocalyptic number.

It is an amenable number.

89211989 is a deficient number, since it is larger than the sum of its proper divisors (498571).

89211989 is a wasteful number, since it uses less digits than its factorization.

89211989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498570.

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

The square root of 89211989 is about 9445.2098441485. The cubic root of 89211989 is about 446.8287141915.

The spelling of 89211989 in words is "eighty-nine million, two hundred eleven thousand, nine hundred eighty-nine".