289878347 has 4 divisors (see below), whose sum is σ = 316230936. Its totient is φ = 263525760.

The previous prime is 289878331. The next prime is 289878349. The reversal of 289878347 is 743878982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 289878347 - 2⁴ = 289878331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 289878292 and 289878301.

It is not an unprimeable number, because it can be changed into a prime (289878349) 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 in 3 ways as a sum of consecutive naturals, for example, 13176278 + ... + 13176299.

It is an arithmetic number, because the mean of its divisors is an integer number (79057734).

Almost surely, 2^289878347 is an apocalyptic number.

289878347 is a deficient number, since it is larger than the sum of its proper divisors (26352589).

289878347 is a wasteful number, since it uses less digits than its factorization.

289878347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26352588.

The product of its digits is 5419008, while the sum is 56.

The square root of 289878347 is about 17025.8141361874. The cubic root of 289878347 is about 661.8180262142.

The spelling of 289878347 in words is "two hundred eighty-nine million, eight hundred seventy-eight thousand, three hundred forty-seven".