97979297 has 4 divisors (see below), whose sum is σ = 105516180. Its totient is φ = 90442416.

The previous prime is 97979291. The next prime is 97979309. The reversal of 97979297 is 79297979.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 59737441 + 38241856 = 7729^2 + 6184^2 .

It is a cyclic number.

It is not a de Polignac number, because 97979297 - 2⁴ = 97979281 is a prime.

It is a super-2 number, since 2×97979297² = 19199885281228418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97979291) 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, 3768422 + ... + 3768447.

It is an arithmetic number, because the mean of its divisors is an integer number (26379045).

Almost surely, 2^97979297 is an apocalyptic number.

It is an amenable number.

97979297 is a deficient number, since it is larger than the sum of its proper divisors (7536883).

97979297 is a wasteful number, since it uses less digits than its factorization.

97979297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536882.

The product of its digits is 4500846, while the sum is 59.

The square root of 97979297 is about 9898.4492219741. The cubic root of 97979297 is about 461.0111609797.

The spelling of 97979297 in words is "ninety-seven million, nine hundred seventy-nine thousand, two hundred ninety-seven".