998954911 has 2 divisors, whose sum is σ = 998954912. Its totient is φ = 998954910.

The previous prime is 998954863. The next prime is 998954939. The reversal of 998954911 is 119459899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998954911 - 2¹³ = 998946719 is a prime.

It is a super-2 number, since 2×998954911² = 1995821828422035842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998954941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499477455 + 499477456.

It is an arithmetic number, because the mean of its divisors is an integer number (499477456).

Almost surely, 2^998954911 is an apocalyptic number.

998954911 is a deficient number, since it is larger than the sum of its proper divisors (1).

998954911 is an equidigital number, since it uses as much as digits as its factorization.

998954911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 55.

The square root of 998954911 is about 31606.2479740952. The cubic root of 998954911 is about 999.6515155727.

The spelling of 998954911 in words is "nine hundred ninety-eight million, nine hundred fifty-four thousand, nine hundred eleven".