213993594 has 12 divisors (see below), whose sum is σ = 463652826. Its totient is φ = 71331192.

The previous prime is 213993557. The next prime is 213993613. The reversal of 213993594 is 495399312.

213993594 is a `hidden beast` number, since 21 + 39 + 9 + 3 + 594 = 666.

It can be written as a sum of positive squares in only one way, i.e., 112084569 + 101909025 = 10587^2 + 10095^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5944249 + ... + 5944284.

Almost surely, 2^213993594 is an apocalyptic number.

213993594 is an abundant number, since it is smaller than the sum of its proper divisors (249659232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213993594 is a wasteful number, since it uses less digits than its factorization.

213993594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11888541 (or 11888538 counting only the distinct ones).

The product of its digits is 262440, while the sum is 45.

The square root of 213993594 is about 14628.5198841168. The cubic root of 213993594 is about 598.1364345321.

The spelling of 213993594 in words is "two hundred thirteen million, nine hundred ninety-three thousand, five hundred ninety-four".