289394139 has 8 divisors (see below), whose sum is σ = 386601552. Its totient is φ = 192558080.

The previous prime is 289394129. The next prime is 289394153. The reversal of 289394139 is 931493982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289394139 - 2⁴ = 289394123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289394129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91014 + ... + 94139.

It is an arithmetic number, because the mean of its divisors is an integer number (48325194).

Almost surely, 2^289394139 is an apocalyptic number.

289394139 is a deficient number, since it is larger than the sum of its proper divisors (97207413).

289394139 is a wasteful number, since it uses less digits than its factorization.

289394139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185677.

The product of its digits is 419904, while the sum is 48.

The square root of 289394139 is about 17011.5883738115. The cubic root of 289394139 is about 661.4493242157.

The spelling of 289394139 in words is "two hundred eighty-nine million, three hundred ninety-four thousand, one hundred thirty-nine".