4090000639 has 2 divisors, whose sum is σ = 4090000640. Its totient is φ = 4090000638.

The previous prime is 4090000627. The next prime is 4090000679. The reversal of 4090000639 is 9360000904.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4090000639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4090000639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4090000679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045000319 + 2045000320.

It is an arithmetic number, because the mean of its divisors is an integer number (2045000320).

Almost surely, 2^4090000639 is an apocalyptic number.

4090000639 is a deficient number, since it is larger than the sum of its proper divisors (1).

4090000639 is an equidigital number, since it uses as much as digits as its factorization.

4090000639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 4090000639 is about 63953.1128171256. The cubic root of 4090000639 is about 1599.2184515040.

The spelling of 4090000639 in words is "four billion, ninety million, six hundred thirty-nine", and thus it is an aban number.