13872211 has 2 divisors, whose sum is σ = 13872212. Its totient is φ = 13872210.

The previous prime is 13872181. The next prime is 13872217. The reversal of 13872211 is 11227831.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13872211 - 2⁹ = 13871699 is a prime.

It is not a weakly prime, because it can be changed into another prime (13872217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6936105 + 6936106.

It is an arithmetic number, because the mean of its divisors is an integer number (6936106).

Almost surely, 2^13872211 is an apocalyptic number.

13872211 is a deficient number, since it is larger than the sum of its proper divisors (1).

13872211 is an equidigital number, since it uses as much as digits as its factorization.

13872211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 25.

The square root of 13872211 is about 3724.5417167754. The cubic root of 13872211 is about 240.2786751347.

The spelling of 13872211 in words is "thirteen million, eight hundred seventy-two thousand, two hundred eleven".