221414839 has 2 divisors, whose sum is σ = 221414840. Its totient is φ = 221414838.

The previous prime is 221414827. The next prime is 221414857. The reversal of 221414839 is 938414122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221414839 - 2¹¹ = 221412791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221414339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110707419 + 110707420.

It is an arithmetic number, because the mean of its divisors is an integer number (110707420).

Almost surely, 2^221414839 is an apocalyptic number.

221414839 is a deficient number, since it is larger than the sum of its proper divisors (1).

221414839 is an equidigital number, since it uses as much as digits as its factorization.

221414839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 34.

The square root of 221414839 is about 14880.0147513368. The cubic root of 221414839 is about 604.9724177485.

The spelling of 221414839 in words is "two hundred twenty-one million, four hundred fourteen thousand, eight hundred thirty-nine".