97722893 has 2 divisors, whose sum is σ = 97722894. Its totient is φ = 97722892.

The previous prime is 97722857. The next prime is 97722899. The reversal of 97722893 is 39822779.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51523684 + 46199209 = 7178^2 + 6797^2 .

It is an emirp because it is prime and its reverse (39822779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97722893 - 2⁶ = 97722829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97722899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48861446 + 48861447.

It is an arithmetic number, because the mean of its divisors is an integer number (48861447).

Almost surely, 2^97722893 is an apocalyptic number.

It is an amenable number.

97722893 is a deficient number, since it is larger than the sum of its proper divisors (1).

97722893 is an equidigital number, since it uses as much as digits as its factorization.

97722893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 97722893 is about 9885.4890116777. The cubic root of 97722893 is about 460.6086665392.

The spelling of 97722893 in words is "ninety-seven million, seven hundred twenty-two thousand, eight hundred ninety-three".