8090639 has 2 divisors, whose sum is σ = 8090640. Its totient is φ = 8090638.

The previous prime is 8090629. The next prime is 8090647. The reversal of 8090639 is 9360908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8090639 - 2¹⁶ = 8025103 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8090599 and 8090608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8090629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4045319 + 4045320.

It is an arithmetic number, because the mean of its divisors is an integer number (4045320).

Almost surely, 2^8090639 is an apocalyptic number.

8090639 is a deficient number, since it is larger than the sum of its proper divisors (1).

8090639 is an equidigital number, since it uses as much as digits as its factorization.

8090639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 8090639 is about 2844.4048586655. The cubic root of 8090639 is about 200.7524902414.

The spelling of 8090639 in words is "eight million, ninety thousand, six hundred thirty-nine".