97895921 has 2 divisors, whose sum is σ = 97895922. Its totient is φ = 97895920.

The previous prime is 97895879. The next prime is 97895947. The reversal of 97895921 is 12959879.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79405921 + 18490000 = 8911^2 + 4300^2 .

It is a cyclic number.

It is not a de Polignac number, because 97895921 - 2⁶ = 97895857 is a prime.

It is a super-2 number, since 2×97895921² = 19167222696876482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 97895921.

It is not a weakly prime, because it can be changed into another prime (97895951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48947960 + 48947961.

It is an arithmetic number, because the mean of its divisors is an integer number (48947961).

Almost surely, 2^97895921 is an apocalyptic number.

It is an amenable number.

97895921 is a deficient number, since it is larger than the sum of its proper divisors (1).

97895921 is an equidigital number, since it uses as much as digits as its factorization.

97895921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 50.

The square root of 97895921 is about 9894.2367568196. The cubic root of 97895921 is about 460.8803572430.

The spelling of 97895921 in words is "ninety-seven million, eight hundred ninety-five thousand, nine hundred twenty-one".