989934740 has 24 divisors (see below), whose sum is σ = 2079928032. Its totient is φ = 395771040.

The previous prime is 989934731. The next prime is 989934763. The reversal of 989934740 is 47439989.

It is a happy number.

It is a congruent number.

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, 31007 + ... + 54233.

It is an arithmetic number, because the mean of its divisors is an integer number (86663668).

Almost surely, 2^989934740 is an apocalyptic number.

It is an amenable number.

989934740 is an abundant number, since it is smaller than the sum of its proper divisors (1089993292).

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

989934740 is a wasteful number, since it uses less digits than its factorization.

989934740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25367 (or 25365 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 989934740 is about 31463.2283785374. The cubic root of 989934740 is about 996.6335933565.

The spelling of 989934740 in words is "nine hundred eighty-nine million, nine hundred thirty-four thousand, seven hundred forty".