989651020 has 24 divisors (see below), whose sum is σ = 2126600784. Its totient is φ = 386654016.

The previous prime is 989651009. The next prime is 989651023. The reversal of 989651020 is 20156989.

It is a hoax number, since the sum of its digits (40) 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 (989651023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 574519 + ... + 576238.

It is an arithmetic number, because the mean of its divisors is an integer number (88608366).

Almost surely, 2^989651020 is an apocalyptic number.

It is an amenable number.

989651020 is an abundant number, since it is smaller than the sum of its proper divisors (1136949764).

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

989651020 is a wasteful number, since it uses less digits than its factorization.

989651020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150809 (or 1150807 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 989651020 is about 31458.7193000605. The cubic root of 989651020 is about 996.5383709511.

The spelling of 989651020 in words is "nine hundred eighty-nine million, six hundred fifty-one thousand, twenty".