139777223 has 4 divisors (see below), whose sum is σ = 139975080. Its totient is φ = 139579368.

The previous prime is 139777217. The next prime is 139777237. The reversal of 139777223 is 322777931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322777931 = 7 ⋅46111133.

It is a cyclic number.

It is not a de Polignac number, because 139777223 - 2¹⁰ = 139776199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139777273) 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, 97865 + ... + 99282.

It is an arithmetic number, because the mean of its divisors is an integer number (34993770).

Almost surely, 2^139777223 is an apocalyptic number.

139777223 is a deficient number, since it is larger than the sum of its proper divisors (197857).

139777223 is an equidigital number, since it uses as much as digits as its factorization.

139777223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197856.

The product of its digits is 111132, while the sum is 41.

The square root of 139777223 is about 11822.7417716873. The cubic root of 139777223 is about 518.9738429527.

The spelling of 139777223 in words is "one hundred thirty-nine million, seven hundred seventy-seven thousand, two hundred twenty-three".