338864237 has 4 divisors (see below), whose sum is σ = 339312636. Its totient is φ = 338415840.

The previous prime is 338864177. The next prime is 338864257. The reversal of 338864237 is 732468833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 732468833 = 23 ⋅31846471.

It can be written as a sum of positive squares in 2 ways, for example, as 94692361 + 244171876 = 9731^2 + 15626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338864237 is a prime.

It is a super-2 number, since 2×338864237² = 229657942235184338, 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 (338864257) 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 3 ways as a sum of consecutive naturals, for example, 223064 + ... + 224577.

It is an arithmetic number, because the mean of its divisors is an integer number (84828159).

Almost surely, 2^338864237 is an apocalyptic number.

It is an amenable number.

338864237 is a deficient number, since it is larger than the sum of its proper divisors (448399).

338864237 is an equidigital number, since it uses as much as digits as its factorization.

338864237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448398.

The product of its digits is 580608, while the sum is 44.

The square root of 338864237 is about 18408.2654533229. The cubic root of 338864237 is about 697.1751716087.

The spelling of 338864237 in words is "three hundred thirty-eight million, eight hundred sixty-four thousand, two hundred thirty-seven".