8051639 has 2 divisors, whose sum is σ = 8051640. Its totient is φ = 8051638.

The previous prime is 8051623. The next prime is 8051651. The reversal of 8051639 is 9361508.

8051639 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8051639 - 2⁴ = 8051623 is a prime.

It is equal to p₅₄₂₉₉₃ and since 8051639 and 542993 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8051609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4025819 + 4025820.

It is an arithmetic number, because the mean of its divisors is an integer number (4025820).

Almost surely, 2^8051639 is an apocalyptic number.

8051639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8051639 is an equidigital number, since it uses as much as digits as its factorization.

8051639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 8051639 is about 2837.5410129195. The cubic root of 8051639 is about 200.4294024081.

The spelling of 8051639 in words is "eight million, fifty-one thousand, six hundred thirty-nine".