139444443 has 8 divisors (see below), whose sum is σ = 206584400. Its totient is φ = 92962944.

The previous prime is 139444429. The next prime is 139444471. The reversal of 139444443 is 344444931.

139444443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139444443 - 2⁴ = 139444427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139444398 and 139444407.

It is not an unprimeable number, because it can be changed into a prime (139444483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2582278 + ... + 2582331.

It is an arithmetic number, because the mean of its divisors is an integer number (25823050).

Almost surely, 2^139444443 is an apocalyptic number.

139444443 is a deficient number, since it is larger than the sum of its proper divisors (67139957).

139444443 is an equidigital number, since it uses as much as digits as its factorization.

139444443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5164618 (or 5164612 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 139444443 is about 11808.6596614518. The cubic root of 139444443 is about 518.5616600266.

The spelling of 139444443 in words is "one hundred thirty-nine million, four hundred forty-four thousand, four hundred forty-three".