289645057 has 8 divisors (see below), whose sum is σ = 312159680. Its totient is φ = 267163920.

The previous prime is 289645043. The next prime is 289645079. The reversal of 289645057 is 750546982.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289645057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 289644998 and 289645016.

It is not an unprimeable number, because it can be changed into a prime (289645457) 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, 11332 + ... + 26602.

It is an arithmetic number, because the mean of its divisors is an integer number (39019960).

Almost surely, 2^289645057 is an apocalyptic number.

It is an amenable number.

289645057 is a deficient number, since it is larger than the sum of its proper divisors (22514623).

289645057 is a wasteful number, since it uses less digits than its factorization.

289645057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16743.

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 289645057 is about 17018.9616898329. The cubic root of 289645057 is about 661.6404379651.

The spelling of 289645057 in words is "two hundred eighty-nine million, six hundred forty-five thousand, fifty-seven".