289916086 has 4 divisors (see below), whose sum is σ = 434874132. Its totient is φ = 144958042.

The previous prime is 289916047. The next prime is 289916087. The reversal of 289916086 is 680619982.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289916087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72479020 + ... + 72479023.

It is an arithmetic number, because the mean of its divisors is an integer number (108718533).

Almost surely, 2^289916086 is an apocalyptic number.

289916086 is a deficient number, since it is larger than the sum of its proper divisors (144958046).

289916086 is a wasteful number, since it uses less digits than its factorization.

289916086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144958045.

The product of its (nonzero) digits is 373248, while the sum is 49.

The square root of 289916086 is about 17026.9223877952. The cubic root of 289916086 is about 661.8467454649.

The spelling of 289916086 in words is "two hundred eighty-nine million, nine hundred sixteen thousand, eighty-six".