904986889 has 9 divisors (see below), whose sum is σ = 920746407. Its totient is φ = 889494144.

The previous prime is 904986881. The next prime is 904986919. The reversal of 904986889 is 988689409.

It is a happy number.

The square root of 904986889 is 30083.

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

It can be written as a sum of positive squares in only one way, i.e., 553049289 + 351937600 = 23517^2 + 18760^2 .

It is not a de Polignac number, because 904986889 - 2³ = 904986881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (904986881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2015337 + ... + 2015785.

Almost surely, 2^904986889 is an apocalyptic number.

904986889 is the 30083-rd square number.

904986889 is the 15042-nd centered octagonal number.

It is an amenable number.

904986889 is a deficient number, since it is larger than the sum of its proper divisors (15759518).

904986889 is an frugal number, since it uses more digits than its factorization.

904986889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 61.

The cubic root of 904986889 is about 967.2693560025.

The spelling of 904986889 in words is "nine hundred four million, nine hundred eighty-six thousand, eight hundred eighty-nine".