998951982 has 32 divisors (see below), whose sum is σ = 2320756224. Its totient is φ = 280735200.

The previous prime is 998951969. The next prime is 998951983. The reversal of 998951982 is 289159899.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998951983) 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, 192394 + ... + 197517.

It is an arithmetic number, because the mean of its divisors is an integer number (72523632).

Almost surely, 2^998951982 is an apocalyptic number.

998951982 is an abundant number, since it is smaller than the sum of its proper divisors (1321804242).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998951982 is a wasteful number, since it uses less digits than its factorization.

998951982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389984.

The product of its digits is 4199040, while the sum is 60.

The square root of 998951982 is about 31606.2016382861. The cubic root of 998951982 is about 999.6505385576.

The spelling of 998951982 in words is "nine hundred ninety-eight million, nine hundred fifty-one thousand, nine hundred eighty-two".