8002639 has 2 divisors, whose sum is σ = 8002640. Its totient is φ = 8002638.

The previous prime is 8002627. The next prime is 8002649. The reversal of 8002639 is 9362008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8002639 - 2¹³ = 7994447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8002649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4001319 + 4001320.

It is an arithmetic number, because the mean of its divisors is an integer number (4001320).

Almost surely, 2^8002639 is an apocalyptic number.

8002639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8002639 is an equidigital number, since it uses as much as digits as its factorization.

8002639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 8002639 is about 2828.8935999786. The cubic root of 8002639 is about 200.0219892489.

The spelling of 8002639 in words is "eight million, two thousand, six hundred thirty-nine".