289489922 has 18 divisors (see below), whose sum is σ = 444540873. Its totient is φ = 141388312.

The previous prime is 289489913. The next prime is 289489943. The reversal of 289489922 is 229984982.

It can be written as a sum of positive squares in 2 ways, for example, as 274598041 + 14891881 = 16571^2 + 3859^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=12031.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1275173 + ... + 1275399.

Almost surely, 2^289489922 is an apocalyptic number.

289489922 is a deficient number, since it is larger than the sum of its proper divisors (155050951).

289489922 is an frugal number, since it uses more digits than its factorization.

289489922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562 (or 282 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 289489922 is about 17014.4033689107. The cubic root of 289489922 is about 661.5222911532.

Multiplying 289489922 by its product of digits (1492992), we get a square (432206137626624 = 20789568²).

The spelling of 289489922 in words is "two hundred eighty-nine million, four hundred eighty-nine thousand, nine hundred twenty-two".