139062439 has 4 divisors (see below), whose sum is σ = 145108656. Its totient is φ = 133016224.

The previous prime is 139062437. The next prime is 139062449. The reversal of 139062439 is 934260931.

139062439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934260931 = 67 ⋅13944193.

It is a cyclic number.

It is not a de Polignac number, because 139062439 - 2¹ = 139062437 is a prime.

It is a super-3 number, since 3×139062439³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139062398 and 139062407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139062437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3023074 + ... + 3023119.

It is an arithmetic number, because the mean of its divisors is an integer number (36277164).

Almost surely, 2^139062439 is an apocalyptic number.

139062439 is a deficient number, since it is larger than the sum of its proper divisors (6046217).

139062439 is an equidigital number, since it uses as much as digits as its factorization.

139062439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6046216.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 139062439 is about 11792.4738286756. The cubic root of 139062439 is about 518.0876987614.

The spelling of 139062439 in words is "one hundred thirty-nine million, sixty-two thousand, four hundred thirty-nine".