139043519 has 2 divisors, whose sum is σ = 139043520. Its totient is φ = 139043518.

The previous prime is 139043497. The next prime is 139043557. The reversal of 139043519 is 915340931.

139043519 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 an emirp because it is prime and its reverse (915340931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139043519 is a prime.

It is a super-2 number, since 2×139043519² = 38666200351806722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139043599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69521759 + 69521760.

It is an arithmetic number, because the mean of its divisors is an integer number (69521760).

Almost surely, 2^139043519 is an apocalyptic number.

139043519 is a deficient number, since it is larger than the sum of its proper divisors (1).

139043519 is an equidigital number, since it uses as much as digits as its factorization.

139043519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 139043519 is about 11791.6715948164. The cubic root of 139043519 is about 518.0642017292.

The spelling of 139043519 in words is "one hundred thirty-nine million, forty-three thousand, five hundred nineteen".