989488381 has 16 divisors (see below), whose sum is σ = 1189031040. Its totient is φ = 805452480.

The previous prime is 989488343. The next prime is 989488387. The reversal of 989488381 is 183884989.

It is not a de Polignac number, because 989488381 - 2²³ = 981099773 is a prime.

It is a super-2 number, since 2×989488381² = 1958174512268002322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989488387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27571 + ... + 52336.

It is an arithmetic number, because the mean of its divisors is an integer number (74314440).

Almost surely, 2^989488381 is an apocalyptic number.

It is an amenable number.

989488381 is a deficient number, since it is larger than the sum of its proper divisors (199542659).

989488381 is a wasteful number, since it uses less digits than its factorization.

989488381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80004.

The product of its digits is 3981312, while the sum is 58.

The square root of 989488381 is about 31456.1342348357. The cubic root of 989488381 is about 996.4837776719.

The spelling of 989488381 in words is "nine hundred eighty-nine million, four hundred eighty-eight thousand, three hundred eighty-one".