213994 has 16 divisors (see below), whose sum is σ = 357696. Its totient is φ = 95200.

The previous prime is 213989. The next prime is 214003. The reversal of 213994 is 499312.

It is a happy number.

It is a nialpdrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1494 + ... + 1630.

It is an arithmetic number, because the mean of its divisors is an integer number (22356).

2²¹³⁹⁹⁴ is an apocalyptic number.

213994 is a deficient number, since it is larger than the sum of its proper divisors (143702).

213994 is a wasteful number, since it uses less digits than its factorization.

213994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its digits is 1944, while the sum is 28.

The square root of 213994 is about 462.5948551378. The cubic root of 213994 is about 59.8136812804.

The spelling of 213994 in words is "two hundred thirteen thousand, nine hundred ninety-four".