289794139 has 4 divisors (see below), whose sum is σ = 292006440. Its totient is φ = 287581840.

The previous prime is 289794091. The next prime is 289794161. The reversal of 289794139 is 931497982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289794139 - 2¹¹ = 289792091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289794539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105954 + ... + 1106215.

It is an arithmetic number, because the mean of its divisors is an integer number (73001610).

Almost surely, 2^289794139 is an apocalyptic number.

289794139 is a deficient number, since it is larger than the sum of its proper divisors (2212301).

289794139 is a wasteful number, since it uses less digits than its factorization.

289794139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212300.

The product of its digits is 979776, while the sum is 52.

The square root of 289794139 is about 17023.3410058073. The cubic root of 289794139 is about 661.7539352254.

The spelling of 289794139 in words is "two hundred eighty-nine million, seven hundred ninety-four thousand, one hundred thirty-nine".