213959 has 4 divisors (see below), whose sum is σ = 225240. Its totient is φ = 202680.

The previous prime is 213953. The next prime is 213973. The reversal of 213959 is 959312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213959 - 2⁴ = 213943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 213959.

It is not an unprimeable number, because it can be changed into a prime (213953) 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, 5612 + ... + 5649.

It is an arithmetic number, because the mean of its divisors is an integer number (56310).

2²¹³⁹⁵⁹ is an apocalyptic number.

213959 is a deficient number, since it is larger than the sum of its proper divisors (11281).

213959 is a wasteful number, since it uses less digits than its factorization.

213959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11280.

The product of its digits is 2430, while the sum is 29.

The square root of 213959 is about 462.5570235117. The cubic root of 213959 is about 59.8104201407.

The spelling of 213959 in words is "two hundred thirteen thousand, nine hundred fifty-nine".