998291901 has 32 divisors (see below), whose sum is σ = 1507939200. Its totient is φ = 583649280.

The previous prime is 998291887. The next prime is 998291923. The reversal of 998291901 is 109192899.

It is not a de Polignac number, because 998291901 - 2⁷ = 998291773 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998291951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50665 + ... + 67553.

It is an arithmetic number, because the mean of its divisors is an integer number (47123100).

Almost surely, 2^998291901 is an apocalyptic number.

998291901 is the 16889-th nonagonal number.

It is an amenable number.

998291901 is a deficient number, since it is larger than the sum of its proper divisors (509647299).

998291901 is a wasteful number, since it uses less digits than its factorization.

998291901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16989.

The product of its (nonzero) digits is 104976, while the sum is 48.

The square root of 998291901 is about 31595.7576424431. The cubic root of 998291901 is about 999.4303091807.

The spelling of 998291901 in words is "nine hundred ninety-eight million, two hundred ninety-one thousand, nine hundred one".