97988489 has 4 divisors (see below), whose sum is σ = 101149440. Its totient is φ = 94827540.

The previous prime is 97988447. The next prime is 97988521. The reversal of 97988489 is 98488979.

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 not a de Polignac number, because 97988489 - 2¹⁶ = 97922953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97988089) 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, 1580429 + ... + 1580490.

It is an arithmetic number, because the mean of its divisors is an integer number (25287360).

Almost surely, 2^97988489 is an apocalyptic number.

It is an amenable number.

97988489 is a deficient number, since it is larger than the sum of its proper divisors (3160951).

97988489 is a wasteful number, since it uses less digits than its factorization.

97988489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3160950.

The product of its digits is 10450944, while the sum is 62.

The square root of 97988489 is about 9898.9135262412. The cubic root of 97988489 is about 461.0255772296.

The spelling of 97988489 in words is "ninety-seven million, nine hundred eighty-eight thousand, four hundred eighty-nine".