289972642 has 16 divisors (see below), whose sum is σ = 458690400. Its totient is φ = 137103840.

The previous prime is 289972633. The next prime is 289972649. The reversal of 289972642 is 246279982.

289972642 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (289972649) 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, 14917 + ... + 28327.

It is an arithmetic number, because the mean of its divisors is an integer number (28668150).

Almost surely, 2^289972642 is an apocalyptic number.

289972642 is a deficient number, since it is larger than the sum of its proper divisors (168717758).

289972642 is a wasteful number, since it uses less digits than its factorization.

289972642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14001.

The product of its digits is 870912, while the sum is 49.

The square root of 289972642 is about 17028.5830884428. The cubic root of 289972642 is about 661.8897797227.

The spelling of 289972642 in words is "two hundred eighty-nine million, nine hundred seventy-two thousand, six hundred forty-two".