139444843 has 2 divisors, whose sum is σ = 139444844. Its totient is φ = 139444842.

The previous prime is 139444793. The next prime is 139444873. The reversal of 139444843 is 348444931.

139444843 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139444843 - 2¹³ = 139436651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139444796 and 139444805.

It is not a weakly prime, because it can be changed into another prime (139444873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69722421 + 69722422.

It is an arithmetic number, because the mean of its divisors is an integer number (69722422).

Almost surely, 2^139444843 is an apocalyptic number.

139444843 is a deficient number, since it is larger than the sum of its proper divisors (1).

139444843 is an equidigital number, since it uses as much as digits as its factorization.

139444843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 40.

The square root of 139444843 is about 11808.6765981629. The cubic root of 139444843 is about 518.5621558619.

The spelling of 139444843 in words is "one hundred thirty-nine million, four hundred forty-four thousand, eight hundred forty-three".