2099940877 has 2 divisors, whose sum is σ = 2099940878. Its totient is φ = 2099940876.

The previous prime is 2099940863. The next prime is 2099940893. The reversal of 2099940877 is 7780499902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1113289956 + 986650921 = 33366^2 + 31411^2 .

It is a cyclic number.

It is not a de Polignac number, because 2099940877 - 2²³ = 2091552269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2099940977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049970438 + 1049970439.

It is an arithmetic number, because the mean of its divisors is an integer number (1049970439).

Almost surely, 2^2099940877 is an apocalyptic number.

It is an amenable number.

2099940877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099940877 is an equidigital number, since it uses as much as digits as its factorization.

2099940877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 2099940877 is about 45825.1118602017. Note that the first 3 decimals coincide. The cubic root of 2099940877 is about 1280.5671471474.

The spelling of 2099940877 in words is "two billion, ninety-nine million, nine hundred forty thousand, eight hundred seventy-seven".