9901046849 has 2 divisors, whose sum is σ = 9901046850. Its totient is φ = 9901046848.

The previous prime is 9901046809. The next prime is 9901046893. The reversal of 9901046849 is 9486401099.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9551543824 + 349503025 = 97732^2 + 18695^2 .

It is a cyclic number.

It is not a de Polignac number, because 9901046849 - 2⁸ = 9901046593 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9901046797 and 9901046806.

It is not a weakly prime, because it can be changed into another prime (9901046809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950523424 + 4950523425.

It is an arithmetic number, because the mean of its divisors is an integer number (4950523425).

Almost surely, 2^9901046849 is an apocalyptic number.

It is an amenable number.

9901046849 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901046849 is an equidigital number, since it uses as much as digits as its factorization.

9901046849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 9901046849 is about 99504.0041857613. The cubic root of 9901046849 is about 2147.3048506850.

The spelling of 9901046849 in words is "nine billion, nine hundred one million, forty-six thousand, eight hundred forty-nine".