139321519 has 2 divisors, whose sum is σ = 139321520. Its totient is φ = 139321518.

The previous prime is 139321463. The next prime is 139321531. The reversal of 139321519 is 915123931.

139321519 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 139321519 - 2¹³ = 139313327 is a prime.

It is a super-2 number, since 2×139321519² = 38820971312934722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139321219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69660759 + 69660760.

It is an arithmetic number, because the mean of its divisors is an integer number (69660760).

Almost surely, 2^139321519 is an apocalyptic number.

139321519 is a deficient number, since it is larger than the sum of its proper divisors (1).

139321519 is an equidigital number, since it uses as much as digits as its factorization.

139321519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 34.

The square root of 139321519 is about 11803.4536894927. The cubic root of 139321519 is about 518.4092399136.

It can be divided in two parts, 13932 and 1519, that added together give a palindrome (15451).

The spelling of 139321519 in words is "one hundred thirty-nine million, three hundred twenty-one thousand, five hundred nineteen".