898021089 has 27 divisors (see below), whose sum is σ = 1509977937. Its totient is φ = 512795304.

The previous prime is 898021081. The next prime is 898021109. The reversal of 898021089 is 980120898.

The square root of 898021089 is 29967.

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

It is not a de Polignac number, because 898021089 - 2³ = 898021081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (898021081) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 628594 + ... + 630020.

Almost surely, 2^898021089 is an apocalyptic number.

898021089 is the 29967-th square number.

898021089 is the 14984-th centered octagonal number.

It is an amenable number.

898021089 is a deficient number, since it is larger than the sum of its proper divisors (611956848).

898021089 is an equidigital number, since it uses as much as digits as its factorization.

898021089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2874 (or 1437 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The cubic root of 898021089 is about 964.7812291887.

Multiplying 898021089 by its product of nonzero digits (82944), we get a square (74485461206016 = 8630496²).

The spelling of 898021089 in words is "eight hundred ninety-eight million, twenty-one thousand, eighty-nine".