998957101 has 2 divisors, whose sum is σ = 998957102. Its totient is φ = 998957100.

The previous prime is 998957081. The next prime is 998957153. The reversal of 998957101 is 101759899.

It is a happy number.

998957101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 886491076 + 112466025 = 29774^2 + 10605^2 .

It is an emirp because it is prime and its reverse (101759899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998957101 - 2²³ = 990568493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998957161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499478550 + 499478551.

It is an arithmetic number, because the mean of its divisors is an integer number (499478551).

Almost surely, 2^998957101 is an apocalyptic number.

It is an amenable number.

998957101 is a deficient number, since it is larger than the sum of its proper divisors (1).

998957101 is an equidigital number, since it uses as much as digits as its factorization.

998957101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 49.

The square root of 998957101 is about 31606.2826191250. The cubic root of 998957101 is about 999.6522460812.

The spelling of 998957101 in words is "nine hundred ninety-eight million, nine hundred fifty-seven thousand, one hundred one".