289780966 has 8 divisors (see below), whose sum is σ = 446419440. Its totient is φ = 140974488.

The previous prime is 289780961. The next prime is 289780973. The reversal of 289780966 is 669087982.

289780966 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289780961) 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, 1957906 + ... + 1958053.

It is an arithmetic number, because the mean of its divisors is an integer number (55802430).

Almost surely, 2^289780966 is an apocalyptic number.

289780966 is a deficient number, since it is larger than the sum of its proper divisors (156638474).

289780966 is a wasteful number, since it uses less digits than its factorization.

289780966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915998.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The square root of 289780966 is about 17022.9540914613. The cubic root of 289780966 is about 661.7439080884.

The spelling of 289780966 in words is "two hundred eighty-nine million, seven hundred eighty thousand, nine hundred sixty-six".