1252486439 has 2 divisors, whose sum is σ = 1252486440. Its totient is φ = 1252486438.

The previous prime is 1252486429. The next prime is 1252486453. The reversal of 1252486439 is 9346842521.

It is a weak prime.

It is an emirp because it is prime and its reverse (9346842521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252486439 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1252486439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252486429) 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, 626243219 + 626243220.

It is an arithmetic number, because the mean of its divisors is an integer number (626243220).

Almost surely, 2^1252486439 is an apocalyptic number.

1252486439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252486439 is an equidigital number, since it uses as much as digits as its factorization.

1252486439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 1252486439 is about 35390.4851478473. The cubic root of 1252486439 is about 1077.9311213468.

The spelling of 1252486439 in words is "one billion, two hundred fifty-two million, four hundred eighty-six thousand, four hundred thirty-nine".