197214893 has 4 divisors (see below), whose sum is σ = 197837340. Its totient is φ = 196592448.

The previous prime is 197214887. The next prime is 197214917. The reversal of 197214893 is 398412791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54125449 + 143089444 = 7357^2 + 11962^2 .

It is a cyclic number.

It is not a de Polignac number, because 197214893 - 2¹⁰ = 197213869 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197214863) 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 in 3 ways as a sum of consecutive naturals, for example, 310748 + ... + 311381.

It is an arithmetic number, because the mean of its divisors is an integer number (49459335).

Almost surely, 2^197214893 is an apocalyptic number.

It is an amenable number.

197214893 is a deficient number, since it is larger than the sum of its proper divisors (622447).

197214893 is an equidigital number, since it uses as much as digits as its factorization.

197214893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622446.

The product of its digits is 108864, while the sum is 44.

The square root of 197214893 is about 14043.3220072745. The cubic root of 197214893 is about 582.0762812200.

The spelling of 197214893 in words is "one hundred ninety-seven million, two hundred fourteen thousand, eight hundred ninety-three".