139219617 has 4 divisors (see below), whose sum is σ = 185626160. Its totient is φ = 92813076.

The previous prime is 139219609. The next prime is 139219627. The reversal of 139219617 is 716912931.

It is a happy number.

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.

It is not a de Polignac number, because 139219617 - 2³ = 139219609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139219627) 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, 23203267 + ... + 23203272.

It is an arithmetic number, because the mean of its divisors is an integer number (46406540).

Almost surely, 2^139219617 is an apocalyptic number.

It is an amenable number.

139219617 is a deficient number, since it is larger than the sum of its proper divisors (46406543).

139219617 is an equidigital number, since it uses as much as digits as its factorization.

139219617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46406542.

The product of its digits is 20412, while the sum is 39.

The square root of 139219617 is about 11799.1362819488. The cubic root of 139219617 is about 518.2828181340.

The spelling of 139219617 in words is "one hundred thirty-nine million, two hundred nineteen thousand, six hundred seventeen".