289749386 has 8 divisors (see below), whose sum is σ = 435118944. Its totient is φ = 144709740.

The previous prime is 289749371. The next prime is 289749389. The reversal of 289749386 is 683947982.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (289749389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80270 + ... + 83801.

It is an arithmetic number, because the mean of its divisors is an integer number (54389868).

Almost surely, 2^289749386 is an apocalyptic number.

289749386 is a deficient number, since it is larger than the sum of its proper divisors (145369558).

289749386 is a wasteful number, since it uses less digits than its factorization.

289749386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164956.

The product of its digits is 5225472, while the sum is 56.

The square root of 289749386 is about 17022.0264951033. The cubic root of 289749386 is about 661.7198685156.

The spelling of 289749386 in words is "two hundred eighty-nine million, seven hundred forty-nine thousand, three hundred eighty-six".