7812249959 has 2 divisors, whose sum is σ = 7812249960. Its totient is φ = 7812249958.

The previous prime is 7812249911. The next prime is 7812250013. The reversal of 7812249959 is 9599422187.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7812249959 - 2¹² = 7812245863 is a prime.

It is a super-2 number, since 2×7812249959² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7812249259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3906124979 + 3906124980.

It is an arithmetic number, because the mean of its divisors is an integer number (3906124980).

Almost surely, 2^7812249959 is an apocalyptic number.

7812249959 is a deficient number, since it is larger than the sum of its proper divisors (1).

7812249959 is an equidigital number, since it uses as much as digits as its factorization.

7812249959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 56.

The square root of 7812249959 is about 88386.9331915074. The cubic root of 7812249959 is about 1984.2301459159.

The spelling of 7812249959 in words is "seven billion, eight hundred twelve million, two hundred forty-nine thousand, nine hundred fifty-nine".