214289393 has 4 divisors (see below), whose sum is σ = 216498660. Its totient is φ = 212080128.

The previous prime is 214289389. The next prime is 214289399. The reversal of 214289393 is 393982412.

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 163123984 + 51165409 = 12772^2 + 7153^2 .

It is a cyclic number.

It is not a de Polignac number, because 214289393 - 2² = 214289389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214289393.

It is not an unprimeable number, because it can be changed into a prime (214289399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104488 + ... + 1104681.

It is an arithmetic number, because the mean of its divisors is an integer number (54124665).

Almost surely, 2^214289393 is an apocalyptic number.

It is an amenable number.

214289393 is a deficient number, since it is larger than the sum of its proper divisors (2209267).

214289393 is an equidigital number, since it uses as much as digits as its factorization.

214289393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209266.

The product of its digits is 93312, while the sum is 41.

The square root of 214289393 is about 14638.6267457026. The cubic root of 214289393 is about 598.4119049283.

The spelling of 214289393 in words is "two hundred fourteen million, two hundred eighty-nine thousand, three hundred ninety-three".