9901898029 has 2 divisors, whose sum is σ = 9901898030. Its totient is φ = 9901898028.

The previous prime is 9901897997. The next prime is 9901898033. The reversal of 9901898029 is 9208981099.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6372349929 + 3529548100 = 79827^2 + 59410^2 .

It is a cyclic number.

It is not a de Polignac number, because 9901898029 - 2⁵ = 9901897997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9901898329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4950949014 + 4950949015.

It is an arithmetic number, because the mean of its divisors is an integer number (4950949015).

Almost surely, 2^9901898029 is an apocalyptic number.

It is an amenable number.

9901898029 is a deficient number, since it is larger than the sum of its proper divisors (1).

9901898029 is an equidigital number, since it uses as much as digits as its factorization.

9901898029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 55.

The square root of 9901898029 is about 99508.2812081487. The cubic root of 9901898029 is about 2147.3663825815.

The spelling of 9901898029 in words is "nine billion, nine hundred one million, eight hundred ninety-eight thousand, twenty-nine".