213956893 has 8 divisors (see below), whose sum is σ = 215913600. Its totient is φ = 212008560.

The previous prime is 213956887. The next prime is 213956927. The reversal of 213956893 is 398659312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213956893 - 2⁵ = 213956861 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 (213956803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56448 + ... + 60118.

It is an arithmetic number, because the mean of its divisors is an integer number (26989200).

Almost surely, 2^213956893 is an apocalyptic number.

It is an amenable number.

213956893 is a deficient number, since it is larger than the sum of its proper divisors (1956707).

213956893 is a wasteful number, since it uses less digits than its factorization.

213956893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4187.

The product of its digits is 349920, while the sum is 46.

The square root of 213956893 is about 14627.2653971957. The cubic root of 213956893 is about 598.1022380873.

The spelling of 213956893 in words is "two hundred thirteen million, nine hundred fifty-six thousand, eight hundred ninety-three".