438373839 has 4 divisors (see below), whose sum is σ = 584498456. Its totient is φ = 292249224.

The previous prime is 438373807. The next prime is 438373847. The reversal of 438373839 is 938373834.

It is a happy number.

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

It is not a de Polignac number, because 438373839 - 2⁵ = 438373807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438373739) 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, 73062304 + ... + 73062309.

It is an arithmetic number, because the mean of its divisors is an integer number (146124614).

Almost surely, 2^438373839 is an apocalyptic number.

438373839 is a deficient number, since it is larger than the sum of its proper divisors (146124617).

438373839 is a wasteful number, since it uses less digits than its factorization.

438373839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146124616.

The product of its digits is 1306368, while the sum is 48.

The square root of 438373839 is about 20937.3789906951. The cubic root of 438373839 is about 759.6523334798.

The spelling of 438373839 in words is "four hundred thirty-eight million, three hundred seventy-three thousand, eight hundred thirty-nine".