259490971 has 4 divisors (see below), whose sum is σ = 259531200. Its totient is φ = 259450744.

The previous prime is 259490969. The next prime is 259490977. The reversal of 259490971 is 179094952.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 259490971 - 2¹ = 259490969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (259490977) 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 3 ways as a sum of consecutive naturals, for example, 8011 + ... + 24148.

It is an arithmetic number, because the mean of its divisors is an integer number (64882800).

Almost surely, 2^259490971 is an apocalyptic number.

259490971 is a deficient number, since it is larger than the sum of its proper divisors (40229).

259490971 is an equidigital number, since it uses as much as digits as its factorization.

259490971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40228.

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

The square root of 259490971 is about 16108.7234441467. The cubic root of 259490971 is about 637.8336347177.

The spelling of 259490971 in words is "two hundred fifty-nine million, four hundred ninety thousand, nine hundred seventy-one".