5261009939 has 2 divisors, whose sum is σ = 5261009940. Its totient is φ = 5261009938.

The previous prime is 5261009933. The next prime is 5261009947. The reversal of 5261009939 is 9399001625.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5261009939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5261009939.

It is not a weakly prime, because it can be changed into another prime (5261009933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630504969 + 2630504970.

It is an arithmetic number, because the mean of its divisors is an integer number (2630504970).

Almost surely, 2^5261009939 is an apocalyptic number.

5261009939 is a deficient number, since it is larger than the sum of its proper divisors (1).

5261009939 is an equidigital number, since it uses as much as digits as its factorization.

5261009939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 5261009939 is about 72532.8197369991. The cubic root of 5261009939 is about 1739.2274214736.

The spelling of 5261009939 in words is "five billion, two hundred sixty-one million, nine thousand, nine hundred thirty-nine".