259742769 has 32 divisors (see below), whose sum is σ = 420016128. Its totient is φ = 140616000.

The previous prime is 259742759. The next prime is 259742789. The reversal of 259742769 is 967247952.

It is not a de Polignac number, because 259742769 - 2⁴ = 259742753 is a prime.

It is a super-2 number, since 2×259742769² = 134932612095574722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (259742759) 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 31 ways as a sum of consecutive naturals, for example, 3534 + ... + 23064.

It is an arithmetic number, because the mean of its divisors is an integer number (13125504).

Almost surely, 2^259742769 is an apocalyptic number.

It is an amenable number.

259742769 is a deficient number, since it is larger than the sum of its proper divisors (160273359).

259742769 is a wasteful number, since it uses less digits than its factorization.

259742769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19589.

The product of its digits is 1905120, while the sum is 51.

The square root of 259742769 is about 16116.5371280558. The cubic root of 259742769 is about 638.0398760793.

The spelling of 259742769 in words is "two hundred fifty-nine million, seven hundred forty-two thousand, seven hundred sixty-nine".