97390721 has 8 divisors (see below), whose sum is σ = 100137600. Its totient is φ = 94672048.

The previous prime is 97390691. The next prime is 97390753. The reversal of 97390721 is 12709379.

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 97390721 - 2¹⁰ = 97389697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97390781) 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, 50 + ... + 13956.

It is an arithmetic number, because the mean of its divisors is an integer number (12517200).

Almost surely, 2^97390721 is an apocalyptic number.

It is an amenable number.

97390721 is a deficient number, since it is larger than the sum of its proper divisors (2746879).

97390721 is a wasteful number, since it uses less digits than its factorization.

97390721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 97390721 is about 9868.6737204145. The cubic root of 97390721 is about 460.0861858046.

The spelling of 97390721 in words is "ninety-seven million, three hundred ninety thousand, seven hundred twenty-one".