289275385 has 16 divisors (see below), whose sum is σ = 397729152. Its totient is φ = 197856000.

The previous prime is 289275373. The next prime is 289275401. The reversal of 289275385 is 583572982.

It is not a de Polignac number, because 289275385 - 2⁷ = 289275257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3730 + ... + 24340.

It is an arithmetic number, because the mean of its divisors is an integer number (24858072).

Almost surely, 2^289275385 is an apocalyptic number.

It is an amenable number.

289275385 is a deficient number, since it is larger than the sum of its proper divisors (108453767).

289275385 is a wasteful number, since it uses less digits than its factorization.

289275385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21024.

The product of its digits is 1209600, while the sum is 49.

The square root of 289275385 is about 17008.0976302466. The cubic root of 289275385 is about 661.3588357442.

The spelling of 289275385 in words is "two hundred eighty-nine million, two hundred seventy-five thousand, three hundred eighty-five".