139105513 has 4 divisors (see below), whose sum is σ = 140200960. Its totient is φ = 138010068.

The previous prime is 139105511. The next prime is 139105523. The reversal of 139105513 is 315501931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 315501931 = 467 ⋅675593.

It is a cyclic number.

It is not a de Polignac number, because 139105513 - 2¹ = 139105511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139105511) 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, 547533 + ... + 547786.

It is an arithmetic number, because the mean of its divisors is an integer number (35050240).

Almost surely, 2^139105513 is an apocalyptic number.

It is an amenable number.

139105513 is a deficient number, since it is larger than the sum of its proper divisors (1095447).

139105513 is a wasteful number, since it uses less digits than its factorization.

139105513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095446.

The product of its (nonzero) digits is 2025, while the sum is 28.

The square root of 139105513 is about 11794.3000216206. The cubic root of 139105513 is about 518.1411850610.

The spelling of 139105513 in words is "one hundred thirty-nine million, one hundred five thousand, five hundred thirteen".