2639080247 has 2 divisors, whose sum is σ = 2639080248. Its totient is φ = 2639080246.

The previous prime is 2639080229. The next prime is 2639080253. The reversal of 2639080247 is 7420809362.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2639080247 - 2¹⁴ = 2639063863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2639080217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319540123 + 1319540124.

It is an arithmetic number, because the mean of its divisors is an integer number (1319540124).

Almost surely, 2^2639080247 is an apocalyptic number.

2639080247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2639080247 is an equidigital number, since it uses as much as digits as its factorization.

2639080247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 2639080247 is about 51371.9792007277. The cubic root of 2639080247 is about 1381.9241252762.

The spelling of 2639080247 in words is "two billion, six hundred thirty-nine million, eighty thousand, two hundred forty-seven".