139279932273 has 4 divisors (see below), whose sum is σ = 185706576368. Its totient is φ = 92853288180.

The previous prime is 139279932229. The next prime is 139279932283. The reversal of 139279932273 is 372239972931.

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: 372239972931 = 3 ⋅124079990977.

It is not a de Polignac number, because 139279932273 - 2¹⁰ = 139279931249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139279932283) 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, 23213322043 + ... + 23213322048.

It is an arithmetic number, because the mean of its divisors is an integer number (46426644092).

Almost surely, 2^139279932273 is an apocalyptic number.

It is an amenable number.

139279932273 is a deficient number, since it is larger than the sum of its proper divisors (46426644095).

139279932273 is an equidigital number, since it uses as much as digits as its factorization.

139279932273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46426644094.

The product of its digits is 7715736, while the sum is 57.

The spelling of 139279932273 in words is "one hundred thirty-nine billion, two hundred seventy-nine million, nine hundred thirty-two thousand, two hundred seventy-three".