139996211 has 2 divisors, whose sum is σ = 139996212. Its totient is φ = 139996210.

The previous prime is 139996189. The next prime is 139996229. The reversal of 139996211 is 112699931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139996211 - 2²² = 135801907 is a prime.

It is not a weakly prime, because it can be changed into another prime (139996231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69998105 + 69998106.

It is an arithmetic number, because the mean of its divisors is an integer number (69998106).

Almost surely, 2^139996211 is an apocalyptic number.

139996211 is a deficient number, since it is larger than the sum of its proper divisors (1).

139996211 is an equidigital number, since it uses as much as digits as its factorization.

139996211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 41.

The square root of 139996211 is about 11831.9994506423. Note that the first 3 decimals coincide. The cubic root of 139996211 is about 519.2447257714.

The spelling of 139996211 in words is "one hundred thirty-nine million, nine hundred ninety-six thousand, two hundred eleven".