89433691 has 4 divisors (see below), whose sum is σ = 89897272. Its totient is φ = 88970112.

The previous prime is 89433689. The next prime is 89433727. The reversal of 89433691 is 19633498.

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 89433691 - 2¹ = 89433689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89433601) 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, 231501 + ... + 231886.

It is an arithmetic number, because the mean of its divisors is an integer number (22474318).

Almost surely, 2^89433691 is an apocalyptic number.

89433691 is a deficient number, since it is larger than the sum of its proper divisors (463581).

89433691 is a wasteful number, since it uses less digits than its factorization.

89433691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463580.

The product of its digits is 139968, while the sum is 43.

The square root of 89433691 is about 9456.9387753120. The cubic root of 89433691 is about 447.1985481603.

The spelling of 89433691 in words is "eighty-nine million, four hundred thirty-three thousand, six hundred ninety-one".