289492638 has 16 divisors (see below), whose sum is σ = 579261456. Its totient is φ = 96451520.

The previous prime is 289492627. The next prime is 289492681. The reversal of 289492638 is 836294982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3658 + ... + 24338.

It is an arithmetic number, because the mean of its divisors is an integer number (36203841).

Almost surely, 2^289492638 is an apocalyptic number.

289492638 is an abundant number, since it is smaller than the sum of its proper divisors (289768818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289492638 is a wasteful number, since it uses less digits than its factorization.

289492638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23019.

The product of its digits is 1492992, while the sum is 51.

The square root of 289492638 is about 17014.4831834529. The cubic root of 289492638 is about 661.5243599517.

The spelling of 289492638 in words is "two hundred eighty-nine million, four hundred ninety-two thousand, six hundred thirty-eight".