289774491 has 16 divisors (see below), whose sum is σ = 417696000. Its totient is φ = 178067808.

The previous prime is 289774483. The next prime is 289774517. The reversal of 289774491 is 194477982.

It is not a de Polignac number, because 289774491 - 2³ = 289774483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (289774421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66591 + ... + 70808.

It is an arithmetic number, because the mean of its divisors is an integer number (26106000).

Almost surely, 2^289774491 is an apocalyptic number.

289774491 is a deficient number, since it is larger than the sum of its proper divisors (127921509).

289774491 is a wasteful number, since it uses less digits than its factorization.

289774491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137458.

The product of its digits is 1016064, while the sum is 51.

The square root of 289774491 is about 17022.7639060171. The cubic root of 289774491 is about 661.7389792809.

The spelling of 289774491 in words is "two hundred eighty-nine million, seven hundred seventy-four thousand, four hundred ninety-one".