214064891 has 4 divisors (see below), whose sum is σ = 214960800. Its totient is φ = 213168984.

The previous prime is 214064843. The next prime is 214064923. The reversal of 214064891 is 198460412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 214064891 - 2¹⁸ = 213802747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214064801) 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 in 3 ways as a sum of consecutive naturals, for example, 447596 + ... + 448073.

It is an arithmetic number, because the mean of its divisors is an integer number (53740200).

Almost surely, 2^214064891 is an apocalyptic number.

214064891 is a deficient number, since it is larger than the sum of its proper divisors (895909).

214064891 is an equidigital number, since it uses as much as digits as its factorization.

214064891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895908.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 214064891 is about 14630.9565989377. The cubic root of 214064891 is about 598.2028548976.

The spelling of 214064891 in words is "two hundred fourteen million, sixty-four thousand, eight hundred ninety-one".