259722469 has 2 divisors, whose sum is σ = 259722470. Its totient is φ = 259722468.

The previous prime is 259722403. The next prime is 259722479. The reversal of 259722469 is 964227952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238331844 + 21390625 = 15438^2 + 4625^2 .

It is a cyclic number.

It is not a de Polignac number, because 259722469 - 2⁷ = 259722341 is a prime.

It is a super-2 number, since 2×259722469² = 134911521806911922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (259722479) 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, 129861234 + 129861235.

It is an arithmetic number, because the mean of its divisors is an integer number (129861235).

Almost surely, 2^259722469 is an apocalyptic number.

It is an amenable number.

259722469 is a deficient number, since it is larger than the sum of its proper divisors (1).

259722469 is an equidigital number, since it uses as much as digits as its factorization.

259722469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 259722469 is about 16115.9073278547. The cubic root of 259722469 is about 638.0232538047.

It can be divided in two parts, 25972 and 2469, that added together give a triangular number (28441 = T₂₃₈).

The spelling of 259722469 in words is "two hundred fifty-nine million, seven hundred twenty-two thousand, four hundred sixty-nine".