989035090 has 16 divisors (see below), whose sum is σ = 1809448920. Its totient is φ = 389128320.

The previous prime is 989035081. The next prime is 989035097. The reversal of 989035090 is 90530989.

It can be written as a sum of positive squares in 4 ways, for example, as 231739729 + 757295361 = 15223^2 + 27519^2 .

It is not an unprimeable number, because it can be changed into a prime (989035097) 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, 810075 + ... + 811294.

Almost surely, 2^989035090 is an apocalyptic number.

989035090 is a deficient number, since it is larger than the sum of its proper divisors (820413830).

989035090 is a wasteful number, since it uses less digits than its factorization.

989035090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621437.

The product of its (nonzero) digits is 87480, while the sum is 43.

The square root of 989035090 is about 31448.9282806267. The cubic root of 989035090 is about 996.3315892179.

The spelling of 989035090 in words is "nine hundred eighty-nine million, thirty-five thousand, ninety".