89912691 has 18 divisors (see below), whose sum is σ = 141829428. Its totient is φ = 54435360.

The previous prime is 89912687. The next prime is 89912707. The reversal of 89912691 is 19621998.

It is not a de Polignac number, because 89912691 - 2² = 89912687 is a prime.

It is a super-2 number, since 2×89912691² = 16168584005722962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89912491) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 93871 + ... + 94823.

Almost surely, 2^89912691 is an apocalyptic number.

89912691 is a deficient number, since it is larger than the sum of its proper divisors (51916737).

89912691 is an equidigital number, since it uses as much as digits as its factorization.

89912691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923 (or 967 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 89912691 is about 9482.2302756261. The cubic root of 89912691 is about 447.9955140787.

The spelling of 89912691 in words is "eighty-nine million, nine hundred twelve thousand, six hundred ninety-one".