439971839980 has 48 divisors (see below), whose sum is σ = 935044205760. Its totient is φ = 173876871168.

The previous prime is 439971839947. The next prime is 439971839987. The reversal of 439971839980 is 89938179934.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (439971839987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2224492 + ... + 2414188.

It is an arithmetic number, because the mean of its divisors is an integer number (19480087620).

Almost surely, 2^439971839980 is an apocalyptic number.

It is an amenable number.

439971839980 is an abundant number, since it is smaller than the sum of its proper divisors (495072365780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439971839980 is a wasteful number, since it uses less digits than its factorization.

439971839980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191098 (or 191096 counting only the distinct ones).

The product of its (nonzero) digits is 105815808, while the sum is 70.

The spelling of 439971839980 in words is "four hundred thirty-nine billion, nine hundred seventy-one million, eight hundred thirty-nine thousand, nine hundred eighty".