998249740 has 24 divisors (see below), whose sum is σ = 2206658160. Its totient is φ = 378283968.

The previous prime is 998249731. The next prime is 998249743. The reversal of 998249740 is 47942899.

It is a happy number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (998249743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1313107 + ... + 1313866.

It is an arithmetic number, because the mean of its divisors is an integer number (91944090).

Almost surely, 2^998249740 is an apocalyptic number.

It is an amenable number.

998249740 is an abundant number, since it is smaller than the sum of its proper divisors (1208408420).

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

998249740 is a wasteful number, since it uses less digits than its factorization.

998249740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2627001 (or 2626999 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 998249740 is about 31595.0904413961. The cubic root of 998249740 is about 999.4162392897.

The spelling of 998249740 in words is "nine hundred ninety-eight million, two hundred forty-nine thousand, seven hundred forty".