214491097 has 2 divisors, whose sum is σ = 214491098. Its totient is φ = 214491096.

The previous prime is 214491089. The next prime is 214491119. The reversal of 214491097 is 790194412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117744201 + 96746896 = 10851^2 + 9836^2 .

It is a cyclic number.

It is not a de Polignac number, because 214491097 - 2³ = 214491089 is a prime.

It is not a weakly prime, because it can be changed into another prime (214491197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107245548 + 107245549.

It is an arithmetic number, because the mean of its divisors is an integer number (107245549).

Almost surely, 2^214491097 is an apocalyptic number.

It is an amenable number.

214491097 is a deficient number, since it is larger than the sum of its proper divisors (1).

214491097 is an equidigital number, since it uses as much as digits as its factorization.

214491097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 214491097 is about 14645.5145693144. The cubic root of 214491097 is about 598.5996016094.

The spelling of 214491097 in words is "two hundred fourteen million, four hundred ninety-one thousand, ninety-seven".