289895390 has 16 divisors (see below), whose sum is σ = 552506832. Its totient is φ = 109137024.

The previous prime is 289895371. The next prime is 289895401. The reversal of 289895390 is 93598982.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 852464 + ... + 852803.

It is an arithmetic number, because the mean of its divisors is an integer number (34531677).

Almost surely, 2^289895390 is an apocalyptic number.

289895390 is a deficient number, since it is larger than the sum of its proper divisors (262611442).

289895390 is a wasteful number, since it uses less digits than its factorization.

289895390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705291.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The square root of 289895390 is about 17026.3146335312. The cubic root of 289895390 is about 661.8309961879.

The spelling of 289895390 in words is "two hundred eighty-nine million, eight hundred ninety-five thousand, three hundred ninety".