214442861 has 4 divisors (see below), whose sum is σ = 220238652. Its totient is φ = 208647072.

The previous prime is 214442831. The next prime is 214442923. The reversal of 214442861 is 168244412.

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 177049636 + 37393225 = 13306^2 + 6115^2 .

It is a cyclic number.

It is not a de Polignac number, because 214442861 - 2¹⁰ = 214441837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214442831) 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, 2897840 + ... + 2897913.

It is an arithmetic number, because the mean of its divisors is an integer number (55059663).

Almost surely, 2^214442861 is an apocalyptic number.

It is an amenable number.

214442861 is a deficient number, since it is larger than the sum of its proper divisors (5795791).

214442861 is an equidigital number, since it uses as much as digits as its factorization.

214442861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5795790.

The product of its digits is 12288, while the sum is 32.

The square root of 214442861 is about 14643.8676926555. The cubic root of 214442861 is about 598.5547260637.

The spelling of 214442861 in words is "two hundred fourteen million, four hundred forty-two thousand, eight hundred sixty-one".