259239431 has 8 divisors (see below), whose sum is σ = 283046400. Its totient is φ = 235472440.

The previous prime is 259239373. The next prime is 259239457. The reversal of 259239431 is 134932952.

It is a happy number.

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 259239431 - 2¹⁴ = 259223047 is a prime.

It is a super-2 number, since 2×259239431² = 134410165170407522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259239931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4490 + ... + 23208.

It is an arithmetic number, because the mean of its divisors is an integer number (35380800).

Almost surely, 2^259239431 is an apocalyptic number.

259239431 is a deficient number, since it is larger than the sum of its proper divisors (23806969).

259239431 is a wasteful number, since it uses less digits than its factorization.

259239431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19989.

The product of its digits is 58320, while the sum is 38.

The square root of 259239431 is about 16100.9139802683. The cubic root of 259239431 is about 637.6274714212.

The spelling of 259239431 in words is "two hundred fifty-nine million, two hundred thirty-nine thousand, four hundred thirty-one".