4093639987 has 2 divisors, whose sum is σ = 4093639988. Its totient is φ = 4093639986.

The previous prime is 4093639969. The next prime is 4093639999. The reversal of 4093639987 is 7899363904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4093639987 - 2¹⁹ = 4093115699 is a prime.

It is not a weakly prime, because it can be changed into another prime (4093630987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2046819993 + 2046819994.

It is an arithmetic number, because the mean of its divisors is an integer number (2046819994).

Almost surely, 2^4093639987 is an apocalyptic number.

4093639987 is a deficient number, since it is larger than the sum of its proper divisors (1).

4093639987 is an equidigital number, since it uses as much as digits as its factorization.

4093639987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The square root of 4093639987 is about 63981.5597418506. The cubic root of 4093639987 is about 1599.6926476035.

The spelling of 4093639987 in words is "four billion, ninety-three million, six hundred thirty-nine thousand, nine hundred eighty-seven".