213000839 has 4 divisors (see below), whose sum is σ = 216180024. Its totient is φ = 209821656.

The previous prime is 213000793. The next prime is 213000841. The reversal of 213000839 is 938000312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213000839 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 (213000889) 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, 1589492 + ... + 1589625.

It is an arithmetic number, because the mean of its divisors is an integer number (54045006).

Almost surely, 2^213000839 is an apocalyptic number.

213000839 is a deficient number, since it is larger than the sum of its proper divisors (3179185).

213000839 is an equidigital number, since it uses as much as digits as its factorization.

213000839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3179184.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 213000839 is about 14594.5482629645. The cubic root of 213000839 is about 597.2100461108.

The spelling of 213000839 in words is "two hundred thirteen million, eight hundred thirty-nine", and thus it is an aban number.