97123639 has 8 divisors (see below), whose sum is σ = 100710000. Its totient is φ = 93553152.

The previous prime is 97123633. The next prime is 97123643. The reversal of 97123639 is 93632179.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 97123639 - 2¹⁵ = 97090871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97123633) 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, 9292 + ... + 16750.

It is an arithmetic number, because the mean of its divisors is an integer number (12588750).

Almost surely, 2^97123639 is an apocalyptic number.

97123639 is a deficient number, since it is larger than the sum of its proper divisors (3586361).

97123639 is a wasteful number, since it uses less digits than its factorization.

97123639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7937.

The product of its digits is 61236, while the sum is 40.

The square root of 97123639 is about 9855.1326221416. The cubic root of 97123639 is about 459.6652242822.

The spelling of 97123639 in words is "ninety-seven million, one hundred twenty-three thousand, six hundred thirty-nine".