289427739 has 16 divisors (see below), whose sum is σ = 400009728. Its totient is φ = 186021792.

The previous prime is 289427731. The next prime is 289427767. The reversal of 289427739 is 937724982.

It is not a de Polignac number, because 289427739 - 2³ = 289427731 is a prime.

It is a super-2 number, since 2×289427739² = 167536832205304242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 289427691 and 289427700.

It is not an unprimeable number, because it can be changed into a prime (289427731) 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, 5872 + ... + 24765.

It is an arithmetic number, because the mean of its divisors is an integer number (25000608).

Almost surely, 2^289427739 is an apocalyptic number.

289427739 is a deficient number, since it is larger than the sum of its proper divisors (110581989).

289427739 is a wasteful number, since it uses less digits than its factorization.

289427739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30754.

The product of its digits is 1524096, while the sum is 51.

The square root of 289427739 is about 17012.5759072517. The cubic root of 289427739 is about 661.4749223352.

The spelling of 289427739 in words is "two hundred eighty-nine million, four hundred twenty-seven thousand, seven hundred thirty-nine".