989895258 has 48 divisors (see below), whose sum is σ = 2341845792. Its totient is φ = 299700000.

The previous prime is 989895223. The next prime is 989895271. The reversal of 989895258 is 852598989.

It is a junction number, because it is equal to n+sod(n) for n = 989895195 and 989895204.

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 23 ways as a sum of consecutive naturals, for example, 438633 + ... + 440883.

It is an arithmetic number, because the mean of its divisors is an integer number (48788454).

Almost surely, 2^989895258 is an apocalyptic number.

989895258 is an abundant number, since it is smaller than the sum of its proper divisors (1351950534).

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

989895258 is a wasteful number, since it uses less digits than its factorization.

989895258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491 (or 4488 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 63.

The square root of 989895258 is about 31462.6009414352. The cubic root of 989895258 is about 996.6203434559.

The spelling of 989895258 in words is "nine hundred eighty-nine million, eight hundred ninety-five thousand, two hundred fifty-eight".