998159211 has 12 divisors (see below), whose sum is σ = 1647754992. Its totient is φ = 570376656.

The previous prime is 998159189. The next prime is 998159219. The reversal of 998159211 is 112951899.

It is not a de Polignac number, because 998159211 - 2⁶ = 998159147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (998159219) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7921836 + ... + 7921961.

It is an arithmetic number, because the mean of its divisors is an integer number (137312916).

Almost surely, 2^998159211 is an apocalyptic number.

998159211 is a deficient number, since it is larger than the sum of its proper divisors (649595781).

998159211 is a wasteful number, since it uses less digits than its factorization.

998159211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15843810 (or 15843807 counting only the distinct ones).

The product of its digits is 58320, while the sum is 45.

The square root of 998159211 is about 31593.6577654440. The cubic root of 998159211 is about 999.3860267807.

The spelling of 998159211 in words is "nine hundred ninety-eight million, one hundred fifty-nine thousand, two hundred eleven".