338405549943 has 4 divisors (see below), whose sum is σ = 451207399928. Its totient is φ = 225603699960.

The previous prime is 338405549939. The next prime is 338405549947. The reversal of 338405549943 is 349945504833.

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

It is an interprime number because it is at equal distance from previous prime (338405549939) and next prime (338405549947).

It is not a de Polignac number, because 338405549943 - 2² = 338405549939 is a prime.

It is a super-2 number, since 2×338405549943² (a number of 24 digits) 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 (338405549947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56400924988 + ... + 56400924993.

It is an arithmetic number, because the mean of its divisors is an integer number (112801849982).

Almost surely, 2^338405549943 is an apocalyptic number.

338405549943 is a deficient number, since it is larger than the sum of its proper divisors (112801849985).

338405549943 is a wasteful number, since it uses less digits than its factorization.

338405549943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112801849984.

The product of its (nonzero) digits is 27993600, while the sum is 57.

The spelling of 338405549943 in words is "three hundred thirty-eight billion, four hundred five million, five hundred forty-nine thousand, nine hundred forty-three".