139272017 has 4 divisors (see below), whose sum is σ = 139316976. Its totient is φ = 139227060.

The previous prime is 139272011. The next prime is 139272019. The reversal of 139272017 is 710272931.

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 a cyclic number.

It is not a de Polignac number, because 139272017 - 2¹⁶ = 139206481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139272011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17459 + ... + 24152.

It is an arithmetic number, because the mean of its divisors is an integer number (34829244).

Almost surely, 2^139272017 is an apocalyptic number.

It is an amenable number.

139272017 is a deficient number, since it is larger than the sum of its proper divisors (44959).

139272017 is an equidigital number, since it uses as much as digits as its factorization.

139272017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44958.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 139272017 is about 11801.3565745638. The cubic root of 139272017 is about 518.3478343860.

The spelling of 139272017 in words is "one hundred thirty-nine million, two hundred seventy-two thousand, seventeen".