289427745 has 48 divisors (see below), whose sum is σ = 493587072. Its totient is φ = 144545280.

The previous prime is 289427731. The next prime is 289427767. The reversal of 289427745 is 547724982.

It is not a de Polignac number, because 289427745 - 2⁵ = 289427713 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 289427694 and 289427703.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1200825 + ... + 1201065.

It is an arithmetic number, because the mean of its divisors is an integer number (10283064).

Almost surely, 2^289427745 is an apocalyptic number.

It is an amenable number.

289427745 is a deficient number, since it is larger than the sum of its proper divisors (204159327).

289427745 is a wasteful number, since it uses less digits than its factorization.

289427745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 331 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 289427745 is about 17012.5760835918. The cubic root of 289427745 is about 661.4749269061.

The spelling of 289427745 in words is "two hundred eighty-nine million, four hundred twenty-seven thousand, seven hundred forty-five".