4191799889 has 2 divisors, whose sum is σ = 4191799890. Its totient is φ = 4191799888.

The previous prime is 4191799847. The next prime is 4191799999. The reversal of 4191799889 is 9889971914.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4149549889 + 42250000 = 64417^2 + 6500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4191799889 is a prime.

It is not a weakly prime, because it can be changed into another prime (4191799489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2095899944 + 2095899945.

It is an arithmetic number, because the mean of its divisors is an integer number (2095899945).

Almost surely, 2^4191799889 is an apocalyptic number.

It is an amenable number.

4191799889 is a deficient number, since it is larger than the sum of its proper divisors (1).

4191799889 is an equidigital number, since it uses as much as digits as its factorization.

4191799889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11757312, while the sum is 65.

The square root of 4191799889 is about 64744.1108441532. The cubic root of 4191799889 is about 1612.3779385922.

The spelling of 4191799889 in words is "four billion, one hundred ninety-one million, seven hundred ninety-nine thousand, eight hundred eighty-nine".