998920441 has 2 divisors, whose sum is σ = 998920442. Its totient is φ = 998920440.

The previous prime is 998920427. The next prime is 998920451. The reversal of 998920441 is 144029899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986211216 + 12709225 = 31404^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 998920441 - 2¹⁷ = 998789369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 998920391 and 998920400.

It is not a weakly prime, because it can be changed into another prime (998920411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499460220 + 499460221.

It is an arithmetic number, because the mean of its divisors is an integer number (499460221).

Almost surely, 2^998920441 is an apocalyptic number.

It is an amenable number.

998920441 is a deficient number, since it is larger than the sum of its proper divisors (1).

998920441 is an equidigital number, since it uses as much as digits as its factorization.

998920441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 998920441 is about 31605.7026658165. The cubic root of 998920441 is about 999.6400174281.

It can be divided in two parts, 99892044 and 1, that added together give a triangular number (99892045 = T₁₄₁₃₄).

The spelling of 998920441 in words is "nine hundred ninety-eight million, nine hundred twenty thousand, four hundred forty-one".