289131479 has 24 divisors (see below), whose sum is σ = 369240480. Its totient is φ = 220207680.

The previous prime is 289131463. The next prime is 289131487. The reversal of 289131479 is 974131982.

It is not a de Polignac number, because 289131479 - 2⁴ = 289131463 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289131419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 873344 + ... + 873674.

It is an arithmetic number, because the mean of its divisors is an integer number (15385020).

Almost surely, 2^289131479 is an apocalyptic number.

289131479 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

289131479 is a deficient number, since it is larger than the sum of its proper divisors (80109001).

289131479 is an equidigital number, since it uses as much as digits as its factorization.

289131479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 380 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 289131479 is about 17003.8665896907. The cubic root of 289131479 is about 661.2491486941.

The spelling of 289131479 in words is "two hundred eighty-nine million, one hundred thirty-one thousand, four hundred seventy-nine".