139220443 has 2 divisors, whose sum is σ = 139220444. Its totient is φ = 139220442.

The previous prime is 139220437. The next prime is 139220489. The reversal of 139220443 is 344022931.

139220443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139220443 - 2²¹ = 137123291 is a prime.

It is not a weakly prime, because it can be changed into another prime (139220423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69610221 + 69610222.

It is an arithmetic number, because the mean of its divisors is an integer number (69610222).

Almost surely, 2^139220443 is an apocalyptic number.

139220443 is a deficient number, since it is larger than the sum of its proper divisors (1).

139220443 is an equidigital number, since it uses as much as digits as its factorization.

139220443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 139220443 is about 11799.1712844589. The cubic root of 139220443 is about 518.2838431351.

The spelling of 139220443 in words is "one hundred thirty-nine million, two hundred twenty thousand, four hundred forty-three".