9897022901 has 2 divisors, whose sum is σ = 9897022902. Its totient is φ = 9897022900.

The previous prime is 9897022873. The next prime is 9897022907. The reversal of 9897022901 is 1092207989.

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., 8648814001 + 1248208900 = 92999^2 + 35330^2 .

It is a cyclic number.

It is not a de Polignac number, because 9897022901 - 2²² = 9892828597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9897022907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4948511450 + 4948511451.

It is an arithmetic number, because the mean of its divisors is an integer number (4948511451).

Almost surely, 2^9897022901 is an apocalyptic number.

It is an amenable number.

9897022901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9897022901 is an equidigital number, since it uses as much as digits as its factorization.

9897022901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 9897022901 is about 99483.7821004007. The cubic root of 9897022901 is about 2147.0139112850.

The spelling of 9897022901 in words is "nine billion, eight hundred ninety-seven million, twenty-two thousand, nine hundred one".