97989900 has 36 divisors (see below), whose sum is σ = 283518312. Its totient is φ = 26130560.

The previous prime is 97989847. The next prime is 97989901. The reversal of 97989900 is 998979.

It is not an unprimeable number, because it can be changed into a prime (97989901) 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, 163017 + ... + 163616.

Almost surely, 2^97989900 is an apocalyptic number.

It is an amenable number.

97989900 is an abundant number, since it is smaller than the sum of its proper divisors (185528412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97989900 is a wasteful number, since it uses less digits than its factorization.

97989900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326650 (or 326643 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 51.

The square root of 97989900 is about 9898.9847964324. The cubic root of 97989900 is about 461.0277900880.

It can be divided in two parts, 97989 and 900, that added together give a palindrome (98889).

The spelling of 97989900 in words is "ninety-seven million, nine hundred eighty-nine thousand, nine hundred".