97423921 has 4 divisors (see below), whose sum is σ = 111341632. Its totient is φ = 83506212.

The previous prime is 97423901. The next prime is 97423933. The reversal of 97423921 is 12932479.

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.

It is a cyclic number.

It is not a de Polignac number, because 97423921 - 2⁹ = 97423409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97423901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6958845 + ... + 6958858.

It is an arithmetic number, because the mean of its divisors is an integer number (27835408).

Almost surely, 2^97423921 is an apocalyptic number.

It is an amenable number.

97423921 is a deficient number, since it is larger than the sum of its proper divisors (13917711).

97423921 is a wasteful number, since it uses less digits than its factorization.

97423921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13917710.

The product of its digits is 27216, while the sum is 37.

The square root of 97423921 is about 9870.3556673506. The cubic root of 97423921 is about 460.1384602096.

The spelling of 97423921 in words is "ninety-seven million, four hundred twenty-three thousand, nine hundred twenty-one".