920090889 has 9 divisors (see below), whose sum is σ = 1329151629. Its totient is φ = 613333260.

The previous prime is 920090887. The next prime is 920090893. The reversal of 920090889 is 988090029.

The square root of 920090889 is 30333.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 920090889 - 2¹ = 920090887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (920090887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 85944 + ... + 96054.

Almost surely, 2^920090889 is an apocalyptic number.

920090889 is the 30333-rd square number.

920090889 is the 15167-th centered octagonal number.

It is an amenable number.

920090889 is a deficient number, since it is larger than the sum of its proper divisors (409060740).

920090889 is an frugal number, since it uses more digits than its factorization.

920090889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20228 (or 10114 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The cubic root of 920090889 is about 972.6208532895.

The spelling of 920090889 in words is "nine hundred twenty million, ninety thousand, eight hundred eighty-nine".