89990397 has 12 divisors (see below), whose sum is σ = 148555680. Its totient is φ = 51423048.

The previous prime is 89990371. The next prime is 89990419. The reversal of 89990397 is 79309998.

It is a happy number.

It is not a de Polignac number, because 89990397 - 2⁷ = 89990269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89910397) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 714147 + ... + 714272.

It is an arithmetic number, because the mean of its divisors is an integer number (12379640).

Almost surely, 2^89990397 is an apocalyptic number.

It is an amenable number.

89990397 is a deficient number, since it is larger than the sum of its proper divisors (58565283).

89990397 is a wasteful number, since it uses less digits than its factorization.

89990397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428432 (or 1428429 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 89990397 is about 9486.3268444641. The cubic root of 89990397 is about 448.1245352259.

The spelling of 89990397 in words is "eighty-nine million, nine hundred ninety thousand, three hundred ninety-seven".