998963101 has 2 divisors, whose sum is σ = 998963102. Its totient is φ = 998963100.

The previous prime is 998963089. The next prime is 998963123. The reversal of 998963101 is 101369899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 843960601 + 155002500 = 29051^2 + 12450^2 .

It is a cyclic number.

It is not a de Polignac number, because 998963101 - 2²⁷ = 864745373 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 (998963131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499481550 + 499481551.

It is an arithmetic number, because the mean of its divisors is an integer number (499481551).

Almost surely, 2^998963101 is an apocalyptic number.

It is an amenable number.

998963101 is a deficient number, since it is larger than the sum of its proper divisors (1).

998963101 is an equidigital number, since it uses as much as digits as its factorization.

998963101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 998963101 is about 31606.3775368200. The cubic root of 998963101 is about 999.6542474690.

The spelling of 998963101 in words is "nine hundred ninety-eight million, nine hundred sixty-three thousand, one hundred one".