139340623 has 4 divisors (see below), whose sum is σ = 146674360. Its totient is φ = 132006888.

The previous prime is 139340611. The next prime is 139340627. The reversal of 139340623 is 326043931.

139340623 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139340623 - 2⁹ = 139340111 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 (139340627) 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, 3666840 + ... + 3666877.

It is an arithmetic number, because the mean of its divisors is an integer number (36668590).

Almost surely, 2^139340623 is an apocalyptic number.

139340623 is a deficient number, since it is larger than the sum of its proper divisors (7333737).

139340623 is an equidigital number, since it uses as much as digits as its factorization.

139340623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333736.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 139340623 is about 11804.2629164213. The cubic root of 139340623 is about 518.4329338784.

The spelling of 139340623 in words is "one hundred thirty-nine million, three hundred forty thousand, six hundred twenty-three".