989903250 has 96 divisors (see below), whose sum is σ = 3059132544. Its totient is φ = 226260000.

The previous prime is 989903231. The next prime is 989903269. The reversal of 989903250 is 52309989.

It is an interprime number because it is at equal distance from previous prime (989903231) and next prime (989903269).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 989903196 and 989903205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15676 + ... + 47175.

It is an arithmetic number, because the mean of its divisors is an integer number (31865964).

Almost surely, 2^989903250 is an apocalyptic number.

989903250 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

989903250 is an abundant number, since it is smaller than the sum of its proper divisors (2069229294).

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

989903250 is a wasteful number, since it uses less digits than its factorization.

989903250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62881 (or 62868 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 989903250 is about 31462.7279491146. The cubic root of 989903250 is about 996.6230255472.

The spelling of 989903250 in words is "nine hundred eighty-nine million, nine hundred three thousand, two hundred fifty".