998255987 has 16 divisors (see below), whose sum is σ = 1043280000. Its totient is φ = 954327360.

The previous prime is 998255969. The next prime is 998255989. The reversal of 998255987 is 789552899.

998255987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 998255987 - 2¹⁴ = 998239603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (998255989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1206668 + ... + 1207494.

It is an arithmetic number, because the mean of its divisors is an integer number (65205000).

Almost surely, 2^998255987 is an apocalyptic number.

998255987 is a deficient number, since it is larger than the sum of its proper divisors (45024013).

998255987 is a wasteful number, since it uses less digits than its factorization.

998255987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426.

The product of its digits is 16329600, while the sum is 62.

The square root of 998255987 is about 31595.1893015377. The cubic root of 998255987 is about 999.4183240520.

The spelling of 998255987 in words is "nine hundred ninety-eight million, two hundred fifty-five thousand, nine hundred eighty-seven".