97722397 has 4 divisors (see below), whose sum is σ = 97754080. Its totient is φ = 97690716.

The previous prime is 97722389. The next prime is 97722403. The reversal of 97722397 is 79322779.

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: 79322779 = 4937 ⋅16067.

It is a cyclic number.

It is not a de Polignac number, because 97722397 - 2³ = 97722389 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 (97722347) 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, 10647 + ... + 17572.

It is an arithmetic number, because the mean of its divisors is an integer number (24438520).

Almost surely, 2^97722397 is an apocalyptic number.

It is an amenable number.

97722397 is a deficient number, since it is larger than the sum of its proper divisors (31683).

97722397 is a wasteful number, since it uses less digits than its factorization.

97722397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31682.

The product of its digits is 333396, while the sum is 46.

The square root of 97722397 is about 9885.4639243690. The cubic root of 97722397 is about 460.6078872530.

The spelling of 97722397 in words is "ninety-seven million, seven hundred twenty-two thousand, three hundred ninety-seven".