998421301 has 2 divisors, whose sum is σ = 998421302. Its totient is φ = 998421300.

The previous prime is 998421269. The next prime is 998421323. The reversal of 998421301 is 103124899.

998421301 = T₂₅₇₉₈ + T₂₅₇₉₉ + T₂₅₈₀₀.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995087025 + 3334276 = 31545^2 + 1826^2 .

It is a cyclic number.

It is not a de Polignac number, because 998421301 - 2⁵ = 998421269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998421341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499210650 + 499210651.

It is an arithmetic number, because the mean of its divisors is an integer number (499210651).

Almost surely, 2^998421301 is an apocalyptic number.

998421301 is the 25800-th centered triangular number.

It is an amenable number.

998421301 is a deficient number, since it is larger than the sum of its proper divisors (1).

998421301 is an equidigital number, since it uses as much as digits as its factorization.

998421301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 998421301 is about 31597.8053193572. The cubic root of 998421301 is about 999.4734898357.

The spelling of 998421301 in words is "nine hundred ninety-eight million, four hundred twenty-one thousand, three hundred one".