97923121 has 4 divisors (see below), whose sum is σ = 102180672. Its totient is φ = 93665572.

The previous prime is 97923097. The next prime is 97923157. The reversal of 97923121 is 12132979.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12132979 = 263 ⋅46133.

It is a cyclic number.

It is not a de Polignac number, because 97923121 - 2¹¹ = 97921073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97923191) 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, 2128741 + ... + 2128786.

It is an arithmetic number, because the mean of its divisors is an integer number (25545168).

Almost surely, 2^97923121 is an apocalyptic number.

It is an amenable number.

97923121 is a deficient number, since it is larger than the sum of its proper divisors (4257551).

97923121 is a wasteful number, since it uses less digits than its factorization.

97923121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257550.

The product of its digits is 6804, while the sum is 34.

The square root of 97923121 is about 9895.6111989104. The cubic root of 97923121 is about 460.9230378939.

The spelling of 97923121 in words is "ninety-seven million, nine hundred twenty-three thousand, one hundred twenty-one".