39991798211 has 2 divisors, whose sum is σ = 39991798212. Its totient is φ = 39991798210.

The previous prime is 39991798169. The next prime is 39991798229. The reversal of 39991798211 is 11289719993.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39991798211 - 2¹⁴ = 39991781827 is a prime.

It is not a weakly prime, because it can be changed into another prime (39991798241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19995899105 + 19995899106.

It is an arithmetic number, because the mean of its divisors is an integer number (19995899106).

Almost surely, 2^39991798211 is an apocalyptic number.

39991798211 is a deficient number, since it is larger than the sum of its proper divisors (1).

39991798211 is an equidigital number, since it uses as much as digits as its factorization.

39991798211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 59.

The spelling of 39991798211 in words is "thirty-nine billion, nine hundred ninety-one million, seven hundred ninety-eight thousand, two hundred eleven".