139025443 has 2 divisors, whose sum is σ = 139025444. Its totient is φ = 139025442.

The previous prime is 139025431. The next prime is 139025479. The reversal of 139025443 is 344520931.

It is a weak prime.

It is an emirp because it is prime and its reverse (344520931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139025443 - 2²¹ = 136928291 is a prime.

It is not a weakly prime, because it can be changed into another prime (139025423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69512721 + 69512722.

It is an arithmetic number, because the mean of its divisors is an integer number (69512722).

Almost surely, 2^139025443 is an apocalyptic number.

139025443 is a deficient number, since it is larger than the sum of its proper divisors (1).

139025443 is an equidigital number, since it uses as much as digits as its factorization.

139025443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 139025443 is about 11790.9050967260. The cubic root of 139025443 is about 518.0417508821.

The spelling of 139025443 in words is "one hundred thirty-nine million, twenty-five thousand, four hundred forty-three".