259117966 has 4 divisors (see below), whose sum is σ = 388676952. Its totient is φ = 129558982.

The previous prime is 259117951. The next prime is 259117967. The reversal of 259117966 is 669711952.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (259117967) 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 as a sum of consecutive naturals, namely, 64779490 + ... + 64779493.

It is an arithmetic number, because the mean of its divisors is an integer number (97169238).

Almost surely, 2^259117966 is an apocalyptic number.

259117966 is a deficient number, since it is larger than the sum of its proper divisors (129558986).

259117966 is a wasteful number, since it uses less digits than its factorization.

259117966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129558985.

The product of its digits is 204120, while the sum is 46.

The square root of 259117966 is about 16097.1415474922. The cubic root of 259117966 is about 637.5278704206.

The spelling of 259117966 in words is "two hundred fifty-nine million, one hundred seventeen thousand, nine hundred sixty-six".