989657862 has 16 divisors (see below), whose sum is σ = 1983210480. Its totient is φ = 329236832.

The previous prime is 989657849. The next prime is 989657891. The reversal of 989657862 is 268756989.

It is a happy number.

It is a super-2 number, since 2×989657862² = 1958845367636822088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989657796 and 989657805.

It is a congruent number.

It is an unprimeable number.

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, 158973 + ... + 165080.

It is an arithmetic number, because the mean of its divisors is an integer number (123950655).

Almost surely, 2^989657862 is an apocalyptic number.

989657862 is an abundant number, since it is smaller than the sum of its proper divisors (993552618).

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

989657862 is a wasteful number, since it uses less digits than its factorization.

989657862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324567.

The product of its digits is 13063680, while the sum is 60.

The square root of 989657862 is about 31458.8280455582. The cubic root of 989657862 is about 996.5406674845.

The spelling of 989657862 in words is "nine hundred eighty-nine million, six hundred fifty-seven thousand, eight hundred sixty-two".