439432340 has 12 divisors (see below), whose sum is σ = 922807956. Its totient is φ = 175772928.

The previous prime is 439432321. The next prime is 439432373. The reversal of 439432340 is 43234934.

It can be written as a sum of positive squares in 2 ways, for example, as 154902916 + 284529424 = 12446^2 + 16868^2 .

It is a junction number, because it is equal to n+sod(n) for n = 439432297 and 439432306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10985789 + ... + 10985828.

It is an arithmetic number, because the mean of its divisors is an integer number (76900663).

Almost surely, 2^439432340 is an apocalyptic number.

It is an amenable number.

439432340 is an abundant number, since it is smaller than the sum of its proper divisors (483375616).

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

439432340 is a wasteful number, since it uses less digits than its factorization.

439432340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21971626 (or 21971624 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 439432340 is about 20962.6415320207. The cubic root of 439432340 is about 760.2632629045.

The spelling of 439432340 in words is "four hundred thirty-nine million, four hundred thirty-two thousand, three hundred forty".