443034139 has 4 divisors (see below), whose sum is σ = 443651040. Its totient is φ = 442417240.

The previous prime is 443034121. The next prime is 443034149. The reversal of 443034139 is 931430344.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 443034139 - 2⁹ = 443033627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 443034139.

It is not an unprimeable number, because it can be changed into a prime (443034149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307372 + ... + 308809.

It is an arithmetic number, because the mean of its divisors is an integer number (110912760).

Almost surely, 2^443034139 is an apocalyptic number.

443034139 is a deficient number, since it is larger than the sum of its proper divisors (616901).

443034139 is an equidigital number, since it uses as much as digits as its factorization.

443034139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616900.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 443034139 is about 21048.3761606448. The cubic root of 443034139 is about 762.3347746991.

The spelling of 443034139 in words is "four hundred forty-three million, thirty-four thousand, one hundred thirty-nine".