439745438 has 8 divisors (see below), whose sum is σ = 719583480. Its totient is φ = 199884280.

The previous prime is 439745431. The next prime is 439745461. The reversal of 439745438 is 834547934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 439745392 and 439745401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439745431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9994193 + ... + 9994236.

It is an arithmetic number, because the mean of its divisors is an integer number (89947935).

Almost surely, 2^439745438 is an apocalyptic number.

439745438 is a deficient number, since it is larger than the sum of its proper divisors (279838042).

439745438 is a wasteful number, since it uses less digits than its factorization.

439745438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19988442.

The product of its digits is 1451520, while the sum is 47.

The square root of 439745438 is about 20970.1082019145. The cubic root of 439745438 is about 760.4437839796.

The spelling of 439745438 in words is "four hundred thirty-nine million, seven hundred forty-five thousand, four hundred thirty-eight".