289418939 has 16 divisors (see below), whose sum is σ = 302847072. Its totient is φ = 276369408.

The previous prime is 289418917. The next prime is 289418947. The reversal of 289418939 is 939814982.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289418939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289418639) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 429707 + ... + 430379.

It is an arithmetic number, because the mean of its divisors is an integer number (18927942).

Almost surely, 2^289418939 is an apocalyptic number.

289418939 is a deficient number, since it is larger than the sum of its proper divisors (13428133).

289418939 is a wasteful number, since it uses less digits than its factorization.

289418939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its digits is 1119744, while the sum is 53.

The square root of 289418939 is about 17012.3172730819. The cubic root of 289418939 is about 661.4682182573.

The spelling of 289418939 in words is "two hundred eighty-nine million, four hundred eighteen thousand, nine hundred thirty-nine".