249868481959 has 2 divisors, whose sum is σ = 249868481960. Its totient is φ = 249868481958.

The previous prime is 249868481957. The next prime is 249868482001. The reversal of 249868481959 is 959184868942.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 249868481959 - 2¹ = 249868481957 is a prime.

It is a super-3 number, since 3×249868481959³ (a number of 35 digits) contains 333 as substring.

Together with 249868481957, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 249868481891 and 249868481900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (249868481957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124934240979 + 124934240980.

It is an arithmetic number, because the mean of its divisors is an integer number (124934240980).

Almost surely, 2^249868481959 is an apocalyptic number.

249868481959 is a deficient number, since it is larger than the sum of its proper divisors (1).

249868481959 is an equidigital number, since it uses as much as digits as its factorization.

249868481959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358318080, while the sum is 73.

The spelling of 249868481959 in words is "two hundred forty-nine billion, eight hundred sixty-eight million, four hundred eighty-one thousand, nine hundred fifty-nine".