214509649 has 2 divisors, whose sum is σ = 214509650. Its totient is φ = 214509648.

The previous prime is 214509643. The next prime is 214509653. The reversal of 214509649 is 946905412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211179024 + 3330625 = 14532^2 + 1825^2 .

It is a cyclic number.

It is not a de Polignac number, because 214509649 - 2⁹ = 214509137 is a prime.

It is not a weakly prime, because it can be changed into another prime (214509643) 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, 107254824 + 107254825.

It is an arithmetic number, because the mean of its divisors is an integer number (107254825).

Almost surely, 2^214509649 is an apocalyptic number.

It is an amenable number.

214509649 is a deficient number, since it is larger than the sum of its proper divisors (1).

214509649 is an equidigital number, since it uses as much as digits as its factorization.

214509649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 214509649 is about 14646.1479236009. The cubic root of 214509649 is about 598.6168593570.

The spelling of 214509649 in words is "two hundred fourteen million, five hundred nine thousand, six hundred forty-nine".