213493849 has 4 divisors (see below), whose sum is σ = 213523380. Its totient is φ = 213464320.

The previous prime is 213493789. The next prime is 213493867. The reversal of 213493849 is 948394312.

213493849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2082249 + 211411600 = 1443^2 + 14540^2 .

It is a cyclic number.

It is not a de Polignac number, because 213493849 - 2¹¹ = 213491801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213493349) 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, 4197 + ... + 21085.

It is an arithmetic number, because the mean of its divisors is an integer number (53380845).

Almost surely, 2^213493849 is an apocalyptic number.

It is an amenable number.

213493849 is a deficient number, since it is larger than the sum of its proper divisors (29531).

213493849 is a wasteful number, since it uses less digits than its factorization.

213493849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29530.

The product of its digits is 186624, while the sum is 43.

The square root of 213493849 is about 14611.4287117995. The cubic root of 213493849 is about 597.6704569019.

The spelling of 213493849 in words is "two hundred thirteen million, four hundred ninety-three thousand, eight hundred forty-nine".