97998478 has 16 divisors (see below), whose sum is σ = 150718464. Its totient is φ = 47767320.

The previous prime is 97998463. The next prime is 97998479. The reversal of 97998478 is 87489979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97998479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23551 + ... + 27397.

It is an arithmetic number, because the mean of its divisors is an integer number (9419904).

Almost surely, 2^97998478 is an apocalyptic number.

97998478 is a deficient number, since it is larger than the sum of its proper divisors (52719986).

97998478 is a wasteful number, since it uses less digits than its factorization.

97998478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167.

The product of its digits is 9144576, while the sum is 61.

The square root of 97998478 is about 9899.4180637046. The cubic root of 97998478 is about 461.0412424302.

The spelling of 97998478 in words is "ninety-seven million, nine hundred ninety-eight thousand, four hundred seventy-eight".