97983897 has 16 divisors (see below), whose sum is σ = 142829568. Its totient is φ = 59256080.

The previous prime is 97983889. The next prime is 97983917. The reversal of 97983897 is 79838979.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 97983897 - 2³ = 97983889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97983897.

It is not an unprimeable number, because it can be changed into a prime (97983827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13648 + ... + 19550.

It is an arithmetic number, because the mean of its divisors is an integer number (8926848).

Almost surely, 2^97983897 is an apocalyptic number.

It is an amenable number.

97983897 is a deficient number, since it is larger than the sum of its proper divisors (44845671).

97983897 is a wasteful number, since it uses less digits than its factorization.

97983897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6420.

The product of its digits is 6858432, while the sum is 60.

The square root of 97983897 is about 9898.6815788771. The cubic root of 97983897 is about 461.0183754908.

It can be divided in two parts, 9798 and 3897, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 97983897 in words is "ninety-seven million, nine hundred eighty-three thousand, eight hundred ninety-seven".