289434378 has 16 divisors (see below), whose sum is σ = 589791456. Its totient is φ = 94657680.

The previous prime is 289434377. The next prime is 289434389. The reversal of 289434378 is 873434982.

It is not an unprimeable number, because it can be changed into a prime (289434371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454768 + ... + 455403.

It is an arithmetic number, because the mean of its divisors is an integer number (36861966).

Almost surely, 2^289434378 is an apocalyptic number.

289434378 is an abundant number, since it is smaller than the sum of its proper divisors (300357078).

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

289434378 is a wasteful number, since it uses less digits than its factorization.

289434378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910229.

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

The square root of 289434378 is about 17012.7710264965. The cubic root of 289434378 is about 661.4799800149.

The spelling of 289434378 in words is "two hundred eighty-nine million, four hundred thirty-four thousand, three hundred seventy-eight".