289931689406 has 4 divisors (see below), whose sum is σ = 434897534112. Its totient is φ = 144965844702.

The previous prime is 289931689373. The next prime is 289931689451. The reversal of 289931689406 is 604986139982.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72482922350 + ... + 72482922353.

It is an arithmetic number, because the mean of its divisors is an integer number (108724383528).

Almost surely, 2^289931689406 is an apocalyptic number.

289931689406 is a deficient number, since it is larger than the sum of its proper divisors (144965844706).

289931689406 is a wasteful number, since it uses less digits than its factorization.

289931689406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144965844705.

The product of its (nonzero) digits is 40310784, while the sum is 65.

The spelling of 289931689406 in words is "two hundred eighty-nine billion, nine hundred thirty-one million, six hundred eighty-nine thousand, four hundred six".