260399983 has 2 divisors, whose sum is σ = 260399984. Its totient is φ = 260399982.

The previous prime is 260399963. The next prime is 260400013. The reversal of 260399983 is 389993062.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 260399983 - 2⁹ = 260399471 is a prime.

It is a super-2 number, since 2×260399983² = 135616302292800578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260399963) 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, 130199991 + 130199992.

It is an arithmetic number, because the mean of its divisors is an integer number (130199992).

Almost surely, 2^260399983 is an apocalyptic number.

260399983 is a deficient number, since it is larger than the sum of its proper divisors (1).

260399983 is an equidigital number, since it uses as much as digits as its factorization.

260399983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 629856, while the sum is 49.

The square root of 260399983 is about 16136.9136764128. The cubic root of 260399983 is about 638.5775561955.

The spelling of 260399983 in words is "two hundred sixty million, three hundred ninety-nine thousand, nine hundred eighty-three".