443700139 has 2 divisors, whose sum is σ = 443700140. Its totient is φ = 443700138.

The previous prime is 443700133. The next prime is 443700149. The reversal of 443700139 is 931007344.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 443700139 - 2⁷ = 443700011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 443700139.

It is not a weakly prime, because it can be changed into another prime (443700133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221850069 + 221850070.

It is an arithmetic number, because the mean of its divisors is an integer number (221850070).

Almost surely, 2^443700139 is an apocalyptic number.

443700139 is a deficient number, since it is larger than the sum of its proper divisors (1).

443700139 is an equidigital number, since it uses as much as digits as its factorization.

443700139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 443700139 is about 21064.1909172890. The cubic root of 443700139 is about 762.7165818155.

The spelling of 443700139 in words is "four hundred forty-three million, seven hundred thousand, one hundred thirty-nine".