439033428 has 18 divisors (see below), whose sum is σ = 1109779034. Its totient is φ = 146344464.

The previous prime is 439033411. The next prime is 439033429. The reversal of 439033428 is 824330934.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 327899664 + 111133764 = 18108^2 + 10542^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 12195373 = 439033428 / (4 + 3 + 9 + 0 + 3 + 3 + 4 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 439033392 and 439033401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439033429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6097651 + ... + 6097722.

Almost surely, 2^439033428 is an apocalyptic number.

It is an amenable number.

439033428 is an abundant number, since it is smaller than the sum of its proper divisors (670745606).

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

439033428 is a wasteful number, since it uses less digits than its factorization.

439033428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12195383 (or 12195378 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 439033428 is about 20953.1245402685. The cubic root of 439033428 is about 760.0331402908.

The spelling of 439033428 in words is "four hundred thirty-nine million, thirty-three thousand, four hundred twenty-eight".