289799385 has 8 divisors (see below), whose sum is σ = 463679040. Its totient is φ = 154559664.

The previous prime is 289799359. The next prime is 289799399. The reversal of 289799385 is 583997982.

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

It is not a de Polignac number, because 289799385 - 2⁵ = 289799353 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9659965 + ... + 9659994.

It is an arithmetic number, because the mean of its divisors is an integer number (57959880).

Almost surely, 2^289799385 is an apocalyptic number.

It is an amenable number.

289799385 is a deficient number, since it is larger than the sum of its proper divisors (173879655).

289799385 is a wasteful number, since it uses less digits than its factorization.

289799385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19319967.

The product of its digits is 9797760, while the sum is 60.

The square root of 289799385 is about 17023.4950876722. The cubic root of 289799385 is about 661.7579283361.

The spelling of 289799385 in words is "two hundred eighty-nine million, seven hundred ninety-nine thousand, three hundred eighty-five".