989025420 has 24 divisors (see below), whose sum is σ = 2769271344. Its totient is φ = 263740096.

The previous prime is 989025419. The next prime is 989025481. The reversal of 989025420 is 24520989.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8241819 + ... + 8241938.

It is an arithmetic number, because the mean of its divisors is an integer number (115386306).

Almost surely, 2^989025420 is an apocalyptic number.

It is an amenable number.

989025420 is an abundant number, since it is smaller than the sum of its proper divisors (1780245924).

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

989025420 is a wasteful number, since it uses less digits than its factorization.

989025420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16483769 (or 16483767 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 989025420 is about 31448.7745389228. The cubic root of 989025420 is about 996.3283420942.

The spelling of 989025420 in words is "nine hundred eighty-nine million, twenty-five thousand, four hundred twenty".