139303447 has 2 divisors, whose sum is σ = 139303448. Its totient is φ = 139303446.

The previous prime is 139303403. The next prime is 139303453. The reversal of 139303447 is 744303931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139303447 - 2⁷ = 139303319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139303147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69651723 + 69651724.

It is an arithmetic number, because the mean of its divisors is an integer number (69651724).

Almost surely, 2^139303447 is an apocalyptic number.

139303447 is a deficient number, since it is larger than the sum of its proper divisors (1).

139303447 is an equidigital number, since it uses as much as digits as its factorization.

139303447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 139303447 is about 11802.6881260160. The cubic root of 139303447 is about 518.3868239055.

The spelling of 139303447 in words is "one hundred thirty-nine million, three hundred three thousand, four hundred forty-seven".