439940000 has 60 divisors (see below), whose sum is σ = 1082367594. Its totient is φ = 175968000.

The previous prime is 439939993. The next prime is 439940029. The reversal of 439940000 is 49934.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 15085456 + 424854544 = 3884^2 + 20612^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9002 + ... + 30998.

Almost surely, 2^439940000 is an apocalyptic number.

439940000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439940000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541183797).

439940000 is an abundant number, since it is smaller than the sum of its proper divisors (642427594).

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

439940000 is an equidigital number, since it uses as much as digits as its factorization.

439940000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22027 (or 22004 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 439940000 is about 20974.7467207592. The cubic root of 439940000 is about 760.5559182856. Note that the first 3 decimals are identical.

Adding to 439940000 its reverse (49934), we get a palindrome (439989934).

The spelling of 439940000 in words is "four hundred thirty-nine million, nine hundred forty thousand".