338404213 has 4 divisors (see below), whose sum is σ = 386747680. Its totient is φ = 290060748.

The previous prime is 338404211. The next prime is 338404229. The reversal of 338404213 is 312404833.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312404833 = 13 ⋅24031141.

It is a cyclic number.

It is not a de Polignac number, because 338404213 - 2¹ = 338404211 is a prime.

It is a super-2 number, since 2×338404213² = 229034822752298738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (338404211) 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, 24171723 + ... + 24171736.

It is an arithmetic number, because the mean of its divisors is an integer number (96686920).

Almost surely, 2^338404213 is an apocalyptic number.

It is an amenable number.

338404213 is a deficient number, since it is larger than the sum of its proper divisors (48343467).

338404213 is an equidigital number, since it uses as much as digits as its factorization.

338404213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48343466.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 338404213 is about 18395.7661705078. The cubic root of 338404213 is about 696.8595461406.

The spelling of 338404213 in words is "three hundred thirty-eight million, four hundred four thousand, two hundred thirteen".