289047939 has 8 divisors (see below), whose sum is σ = 385640640. Its totient is φ = 192576936.

The previous prime is 289047919. The next prime is 289047971. The reversal of 289047939 is 939740982.

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

It is not a de Polignac number, because 289047939 - 2²⁴ = 272270723 is a prime.

It is a super-2 number, since 2×289047939² = 167097422080295442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289047891 and 289047900.

It is not an unprimeable number, because it can be changed into a prime (289047919) 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, 24729 + ... + 34490.

It is an arithmetic number, because the mean of its divisors is an integer number (48205080).

Almost surely, 2^289047939 is an apocalyptic number.

289047939 is a deficient number, since it is larger than the sum of its proper divisors (96592701).

289047939 is a wasteful number, since it uses less digits than its factorization.

289047939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60849.

The product of its (nonzero) digits is 979776, while the sum is 51.

The square root of 289047939 is about 17001.4099121220. The cubic root of 289047939 is about 661.1854567072.

The spelling of 289047939 in words is "two hundred eighty-nine million, forty-seven thousand, nine hundred thirty-nine".