213849399 has 8 divisors (see below), whose sum is σ = 292087152. Its totient is φ = 139088960.

The previous prime is 213849397. The next prime is 213849403. The reversal of 213849399 is 993948312.

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 213849399 - 2¹ = 213849397 is a prime.

It is a super-2 number, since 2×213849399² = 91463130905322402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213849397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869184 + ... + 869429.

It is an arithmetic number, because the mean of its divisors is an integer number (36510894).

Almost surely, 2^213849399 is an apocalyptic number.

213849399 is a deficient number, since it is larger than the sum of its proper divisors (78237753).

213849399 is a wasteful number, since it uses less digits than its factorization.

213849399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738657.

The product of its digits is 419904, while the sum is 48.

The square root of 213849399 is about 14623.5904961812. The cubic root of 213849399 is about 598.0020572033.

The spelling of 213849399 in words is "two hundred thirteen million, eight hundred forty-nine thousand, three hundred ninety-nine".