989426718 has 64 divisors (see below), whose sum is σ = 2564160000. Its totient is φ = 282688056.

The previous prime is 989426701. The next prime is 989426747. The reversal of 989426718 is 817624989.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8188 + ... + 45231.

It is an arithmetic number, because the mean of its divisors is an integer number (40065000).

Almost surely, 2^989426718 is an apocalyptic number.

989426718 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

989426718 is an abundant number, since it is smaller than the sum of its proper divisors (1574733282).

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

989426718 is a wasteful number, since it uses less digits than its factorization.

989426718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53451 (or 53431 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 989426718 is about 31455.1540768759. The cubic root of 989426718 is about 996.4630775953.

The spelling of 989426718 in words is "nine hundred eighty-nine million, four hundred twenty-six thousand, seven hundred eighteen".