89663391 has 6 divisors (see below), whose sum is σ = 129513800. Its totient is φ = 59775588.

The previous prime is 89663383. The next prime is 89663393. The reversal of 89663391 is 19336698.

89663391 is a `hidden beast` number, since 8 + 9 + 6 + 633 + 9 + 1 = 666.

It is not a de Polignac number, because 89663391 - 2³ = 89663383 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 (89663393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4981291 + ... + 4981308.

Almost surely, 2^89663391 is an apocalyptic number.

89663391 is a deficient number, since it is larger than the sum of its proper divisors (39850409).

89663391 is a wasteful number, since it uses less digits than its factorization.

89663391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9962605 (or 9962602 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 89663391 is about 9469.0755092564. The cubic root of 89663391 is about 447.5810799479.

The spelling of 89663391 in words is "eighty-nine million, six hundred sixty-three thousand, three hundred ninety-one".