289378434 has 16 divisors (see below), whose sum is σ = 579180672. Its totient is φ = 96388848.

The previous prime is 289378429. The next prime is 289378447. The reversal of 289378434 is 434873982.

It is a Curzon number.

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, 8409 + ... + 25484.

It is an arithmetic number, because the mean of its divisors is an integer number (36198792).

Almost surely, 2^289378434 is an apocalyptic number.

289378434 is an abundant number, since it is smaller than the sum of its proper divisors (289802238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289378434 is a wasteful number, since it uses less digits than its factorization.

289378434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35321.

The product of its digits is 1161216, while the sum is 48.

The square root of 289378434 is about 17011.1267704406. The cubic root of 289378434 is about 661.4373587009.

The spelling of 289378434 in words is "two hundred eighty-nine million, three hundred seventy-eight thousand, four hundred thirty-four".