214403939 has 2 divisors, whose sum is σ = 214403940. Its totient is φ = 214403938.

The previous prime is 214403929. The next prime is 214403941. The reversal of 214403939 is 939304412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214403939 is a prime.

It is a Sophie Germain prime.

Together with 214403941, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 214403899 and 214403908.

It is not a weakly prime, because it can be changed into another prime (214403929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107201969 + 107201970.

It is an arithmetic number, because the mean of its divisors is an integer number (107201970).

Almost surely, 2^214403939 is an apocalyptic number.

214403939 is a deficient number, since it is larger than the sum of its proper divisors (1).

214403939 is an equidigital number, since it uses as much as digits as its factorization.

214403939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 214403939 is about 14642.5386801606. The cubic root of 214403939 is about 598.5185107341.

The spelling of 214403939 in words is "two hundred fourteen million, four hundred three thousand, nine hundred thirty-nine".