4089878993 has 2 divisors, whose sum is σ = 4089878994. Its totient is φ = 4089878992.

The previous prime is 4089878981. The next prime is 4089879047. The reversal of 4089878993 is 3998789804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2202237184 + 1887641809 = 46928^2 + 43447^2 .

It is a cyclic number.

It is not a de Polignac number, because 4089878993 - 2¹² = 4089874897 is a prime.

It is a super-2 number, since 2×4089878993² = 33454220354765388098, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (4089878893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2044939496 + 2044939497.

It is an arithmetic number, because the mean of its divisors is an integer number (2044939497).

Almost surely, 2^4089878993 is an apocalyptic number.

It is an amenable number.

4089878993 is a deficient number, since it is larger than the sum of its proper divisors (1).

4089878993 is an equidigital number, since it uses as much as digits as its factorization.

4089878993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 65.

The square root of 4089878993 is about 63952.1617539235. The cubic root of 4089878993 is about 1599.2025965386.

The spelling of 4089878993 in words is "four billion, eighty-nine million, eight hundred seventy-eight thousand, nine hundred ninety-three".