214393917 has 4 divisors (see below), whose sum is σ = 285858560. Its totient is φ = 142929276.

The previous prime is 214393901. The next prime is 214393937. The reversal of 214393917 is 719393412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 214393917 - 2⁴ = 214393901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214393937) 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, 35732317 + ... + 35732322.

It is an arithmetic number, because the mean of its divisors is an integer number (71464640).

Almost surely, 2^214393917 is an apocalyptic number.

It is an amenable number.

214393917 is a deficient number, since it is larger than the sum of its proper divisors (71464643).

214393917 is an equidigital number, since it uses as much as digits as its factorization.

214393917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71464642.

The product of its digits is 40824, while the sum is 39.

The square root of 214393917 is about 14642.1964540843. The cubic root of 214393917 is about 598.5091849633.

The spelling of 214393917 in words is "two hundred fourteen million, three hundred ninety-three thousand, nine hundred seventeen".