8997902261 has 2 divisors, whose sum is σ = 8997902262. Its totient is φ = 8997902260.

The previous prime is 8997902191. The next prime is 8997902269. The reversal of 8997902261 is 1622097998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7500599236 + 1497303025 = 86606^2 + 38695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8997902261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8997902269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4498951130 + 4498951131.

It is an arithmetic number, because the mean of its divisors is an integer number (4498951131).

Almost surely, 2^8997902261 is an apocalyptic number.

It is an amenable number.

8997902261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8997902261 is an equidigital number, since it uses as much as digits as its factorization.

8997902261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 8997902261 is about 94857.2731054398. The cubic root of 8997902261 is about 2079.9222003845.

The spelling of 8997902261 in words is "eight billion, nine hundred ninety-seven million, nine hundred two thousand, two hundred sixty-one".