289031427 has 12 divisors (see below), whose sum is σ = 427673064. Its totient is φ = 187987680.

The previous prime is 289031411. The next prime is 289031441. The reversal of 289031427 is 724130982.

It is not a de Polignac number, because 289031427 - 2⁴ = 289031411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 289031391 and 289031400.

It is not an unprimeable number, because it can be changed into a prime (289031497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391273 + ... + 392010.

It is an arithmetic number, because the mean of its divisors is an integer number (35639422).

Almost surely, 2^289031427 is an apocalyptic number.

289031427 is a deficient number, since it is larger than the sum of its proper divisors (138641637).

289031427 is a wasteful number, since it uses less digits than its factorization.

289031427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783330 (or 783327 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 289031427 is about 17000.9242984021. The cubic root of 289031427 is about 661.1728662903.

The spelling of 289031427 in words is "two hundred eighty-nine million, thirty-one thousand, four hundred twenty-seven".