1240044887 has 2 divisors, whose sum is σ = 1240044888. Its totient is φ = 1240044886.

The previous prime is 1240044881. The next prime is 1240044907. The reversal of 1240044887 is 7884400421.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (7884400421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1240044887 - 2¹⁸ = 1239782743 is a prime.

It is a super-2 number, since 2×1240044887² = 3075422643549685538, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1240044887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240044881) 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, 620022443 + 620022444.

It is an arithmetic number, because the mean of its divisors is an integer number (620022444).

Almost surely, 2^1240044887 is an apocalyptic number.

1240044887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240044887 is an equidigital number, since it uses as much as digits as its factorization.

1240044887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 1240044887 is about 35214.2710701216. The cubic root of 1240044887 is about 1074.3500342111.

The spelling of 1240044887 in words is "one billion, two hundred forty million, forty-four thousand, eight hundred eighty-seven".