289959397 has 8 divisors (see below), whose sum is σ = 356873216. Its totient is φ = 229418352.

The previous prime is 289959379. The next prime is 289959409. The reversal of 289959397 is 793959982.

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 289959397 - 2¹⁵ = 289926629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289959377) 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, 1593093 + ... + 1593274.

It is an arithmetic number, because the mean of its divisors is an integer number (44609152).

Almost surely, 2^289959397 is an apocalyptic number.

It is an amenable number.

289959397 is a deficient number, since it is larger than the sum of its proper divisors (66913819).

289959397 is a wasteful number, since it uses less digits than its factorization.

289959397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186387.

The product of its digits is 11022480, while the sum is 61.

The square root of 289959397 is about 17028.1941790667. The cubic root of 289959397 is about 661.8797019173.

The spelling of 289959397 in words is "two hundred eighty-nine million, nine hundred fifty-nine thousand, three hundred ninety-seven".