289394138 has 16 divisors (see below), whose sum is σ = 477287424. Its totient is φ = 130505760.

The previous prime is 289394129. The next prime is 289394153. The reversal of 289394138 is 831493982.

It is a happy number.

289394138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 289394092 and 289394101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48995 + ... + 54582.

It is an arithmetic number, because the mean of its divisors is an integer number (29830464).

Almost surely, 2^289394138 is an apocalyptic number.

289394138 is a deficient number, since it is larger than the sum of its proper divisors (187893286).

289394138 is a wasteful number, since it uses less digits than its factorization.

289394138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103717.

The product of its digits is 373248, while the sum is 47.

The square root of 289394138 is about 17011.5883444198. The cubic root of 289394138 is about 661.4493234538.

The spelling of 289394138 in words is "two hundred eighty-nine million, three hundred ninety-four thousand, one hundred thirty-eight".