139830515 has 16 divisors (see below), whose sum is σ = 185262336. Its totient is φ = 100466400.

The previous prime is 139830503. The next prime is 139830517. The reversal of 139830515 is 515038931.

139830515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139830515 - 2⁶ = 139830451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139830517) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10751 + ... + 19880.

It is an arithmetic number, because the mean of its divisors is an integer number (11578896).

Almost surely, 2^139830515 is an apocalyptic number.

139830515 is a deficient number, since it is larger than the sum of its proper divisors (45431821).

139830515 is a wasteful number, since it uses less digits than its factorization.

139830515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30730.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 139830515 is about 11824.9953488363. The cubic root of 139830515 is about 519.0397898914.

It can be divided in two parts, 1398 and 30515, that added together give a palindrome (31913).

The spelling of 139830515 in words is "one hundred thirty-nine million, eight hundred thirty thousand, five hundred fifteen".