439803703642 has 8 divisors (see below), whose sum is σ = 659745040500. Its totient is φ = 219888690144.

The previous prime is 439803703621. The next prime is 439803703643. The reversal of 439803703642 is 246307308934.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 439742723161 + 60980481 = 663131^2 + 7809^2 .

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

It is not an unprimeable number, because it can be changed into a prime (439803703643) 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, 6539017 + ... + 6605932.

Almost surely, 2^439803703642 is an apocalyptic number.

439803703642 is a deficient number, since it is larger than the sum of its proper divisors (219941336858).

439803703642 is a wasteful number, since it uses less digits than its factorization.

439803703642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13161680.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The spelling of 439803703642 in words is "four hundred thirty-nine billion, eight hundred three million, seven hundred three thousand, six hundred forty-two".