289891916 has 6 divisors (see below), whose sum is σ = 507310860. Its totient is φ = 144945956.

The previous prime is 289891913. The next prime is 289891933. The reversal of 289891916 is 619198982.

It is not an unprimeable number, because it can be changed into a prime (289891913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36236486 + ... + 36236493.

It is an arithmetic number, because the mean of its divisors is an integer number (84551810).

Almost surely, 2^289891916 is an apocalyptic number.

It is an amenable number.

289891916 is a deficient number, since it is larger than the sum of its proper divisors (217418944).

289891916 is a wasteful number, since it uses less digits than its factorization.

289891916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72472983 (or 72472981 counting only the distinct ones).

The product of its digits is 559872, while the sum is 53.

The square root of 289891916 is about 17026.2126146715. The cubic root of 289891916 is about 661.8283524641.

The spelling of 289891916 in words is "two hundred eighty-nine million, eight hundred ninety-one thousand, nine hundred sixteen".