989858938 has 16 divisors (see below), whose sum is σ = 1516580064. Its totient is φ = 484426800.

The previous prime is 989858927. The next prime is 989858939. The reversal of 989858938 is 839858989.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is not an unprimeable number, because it can be changed into a prime (989858939) 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, 2488 + ... + 44563.

It is an arithmetic number, because the mean of its divisors is an integer number (94786254).

Almost surely, 2^989858938 is an apocalyptic number.

989858938 is a deficient number, since it is larger than the sum of its proper divisors (526721126).

989858938 is a wasteful number, since it uses less digits than its factorization.

989858938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47277.

The product of its digits is 44789760, while the sum is 67.

The square root of 989858938 is about 31462.0237429190. The cubic root of 989858938 is about 996.6081543907.

The spelling of 989858938 in words is "nine hundred eighty-nine million, eight hundred fifty-eight thousand, nine hundred thirty-eight".