97222391 has 8 divisors (see below), whose sum is σ = 111275424. Its totient is φ = 83210400.

The previous prime is 97222387. The next prime is 97222397. The reversal of 97222391 is 19322279.

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

It is not a de Polignac number, because 97222391 - 2² = 97222387 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 (97222397) 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, 5000 + ... + 14813.

It is an arithmetic number, because the mean of its divisors is an integer number (13909428).

Almost surely, 2^97222391 is an apocalyptic number.

97222391 is a deficient number, since it is larger than the sum of its proper divisors (14053033).

97222391 is a wasteful number, since it uses less digits than its factorization.

97222391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20521.

The product of its digits is 13608, while the sum is 35.

The square root of 97222391 is about 9860.1415304244. The cubic root of 97222391 is about 459.8209621463.

The spelling of 97222391 in words is "ninety-seven million, two hundred twenty-two thousand, three hundred ninety-one".