97889994 has 24 divisors (see below), whose sum is σ = 215574372. Its totient is φ = 32094720.

The previous prime is 97889977. The next prime is 97889999. The reversal of 97889994 is 49998879.

It can be written as a sum of positive squares in 2 ways, for example, as 79869969 + 18020025 = 8937^2 + 4245^2 .

It is not an unprimeable number, because it can be changed into a prime (97889999) 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, 43479 + ... + 45674.

Almost surely, 2^97889994 is an apocalyptic number.

97889994 is an abundant number, since it is smaller than the sum of its proper divisors (117684378).

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

97889994 is a wasteful number, since it uses less digits than its factorization.

97889994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89222 (or 89219 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 63.

The square root of 97889994 is about 9893.9372344886. The cubic root of 97889994 is about 460.8710558919.

The spelling of 97889994 in words is "ninety-seven million, eight hundred eighty-nine thousand, nine hundred ninety-four".