289479691 has 8 divisors (see below), whose sum is σ = 291267584. Its totient is φ = 287697960.

The previous prime is 289479667. The next prime is 289479703. The reversal of 289479691 is 196974982.

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

It is a cyclic number.

It is not a de Polignac number, because 289479691 - 2⁷ = 289479563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (289479391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120286 + ... + 122668.

It is an arithmetic number, because the mean of its divisors is an integer number (36408448).

Almost surely, 2^289479691 is an apocalyptic number.

289479691 is a deficient number, since it is larger than the sum of its proper divisors (1787893).

289479691 is a wasteful number, since it uses less digits than its factorization.

289479691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081.

The product of its digits is 1959552, while the sum is 55.

The square root of 289479691 is about 17014.1027092233. The cubic root of 289479691 is about 661.5144980042.

The spelling of 289479691 in words is "two hundred eighty-nine million, four hundred seventy-nine thousand, six hundred ninety-one".