9839801899 has 2 divisors, whose sum is σ = 9839801900. Its totient is φ = 9839801898.

The previous prime is 9839801893. The next prime is 9839801953. The reversal of 9839801899 is 9981089389.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9839801899 - 2¹⁹ = 9839277611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9839801899.

It is not a weakly prime, because it can be changed into another prime (9839801893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4919900949 + 4919900950.

It is an arithmetic number, because the mean of its divisors is an integer number (4919900950).

Almost surely, 2^9839801899 is an apocalyptic number.

9839801899 is a deficient number, since it is larger than the sum of its proper divisors (1).

9839801899 is an equidigital number, since it uses as much as digits as its factorization.

9839801899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10077696, while the sum is 64.

The square root of 9839801899 is about 99195.7756106579. The cubic root of 9839801899 is about 2142.8681589607.

The spelling of 9839801899 in words is "nine billion, eight hundred thirty-nine million, eight hundred one thousand, eight hundred ninety-nine".