9899366461 has 2 divisors, whose sum is σ = 9899366462. Its totient is φ = 9899366460.

The previous prime is 9899366387. The next prime is 9899366479. The reversal of 9899366461 is 1646639989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8504343961 + 1395022500 = 92219^2 + 37350^2 .

It is a cyclic number.

It is not a de Polignac number, because 9899366461 - 2³³ = 1309431869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9899366461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9899360461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4949683230 + 4949683231.

It is an arithmetic number, because the mean of its divisors is an integer number (4949683231).

Almost surely, 2^9899366461 is an apocalyptic number.

It is an amenable number.

9899366461 is a deficient number, since it is larger than the sum of its proper divisors (1).

9899366461 is an equidigital number, since it uses as much as digits as its factorization.

9899366461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15116544, while the sum is 61.

The square root of 9899366461 is about 99495.5600064646. The cubic root of 9899366461 is about 2147.1833648964.

The spelling of 9899366461 in words is "nine billion, eight hundred ninety-nine million, three hundred sixty-six thousand, four hundred sixty-one".