289939647 has 16 divisors (see below), whose sum is σ = 392802048. Its totient is φ = 190196160.

The previous prime is 289939597. The next prime is 289939681. The reversal of 289939647 is 746939982.

It is not a de Polignac number, because 289939647 - 2²⁴ = 273162431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289939697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144483 + ... + 146475.

It is an arithmetic number, because the mean of its divisors is an integer number (24550128).

Almost surely, 2^289939647 is an apocalyptic number.

289939647 is a deficient number, since it is larger than the sum of its proper divisors (102862401).

289939647 is a wasteful number, since it uses less digits than its factorization.

289939647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2750.

The product of its digits is 5878656, while the sum is 57.

The square root of 289939647 is about 17027.6142486257. The cubic root of 289939647 is about 661.8646740420.

The spelling of 289939647 in words is "two hundred eighty-nine million, nine hundred thirty-nine thousand, six hundred forty-seven".