289652639 has 8 divisors (see below), whose sum is σ = 302945280. Its totient is φ = 276418296.

The previous prime is 289652617. The next prime is 289652641. The reversal of 289652639 is 936256982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 289652639 - 2⁸ = 289652383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289652669) 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, 4247 + ... + 24440.

It is an arithmetic number, because the mean of its divisors is an integer number (37868160).

Almost surely, 2^289652639 is an apocalyptic number.

289652639 is a deficient number, since it is larger than the sum of its proper divisors (13292641).

289652639 is a wasteful number, since it uses less digits than its factorization.

289652639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29149.

The product of its digits is 1399680, while the sum is 50.

The square root of 289652639 is about 17019.1844399196. The cubic root of 289652639 is about 661.6462111392.

The spelling of 289652639 in words is "two hundred eighty-nine million, six hundred fifty-two thousand, six hundred thirty-nine".