998044386 has 16 divisors (see below), whose sum is σ = 2044774368. Its totient is φ = 324567200.

The previous prime is 998044357. The next prime is 998044387. The reversal of 998044386 is 683440899.

It is a happy number.

It is a super-2 number, since 2×998044386² = 1992185192852233992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (998044387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028300 + ... + 2028791.

It is an arithmetic number, because the mean of its divisors is an integer number (127798398).

Almost surely, 2^998044386 is an apocalyptic number.

998044386 is an abundant number, since it is smaller than the sum of its proper divisors (1046729982).

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

998044386 is a wasteful number, since it uses less digits than its factorization.

998044386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4057137.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 998044386 is about 31591.8404971917. The cubic root of 998044386 is about 999.3477032682.

The spelling of 998044386 in words is "nine hundred ninety-eight million, forty-four thousand, three hundred eighty-six".