139623207 has 8 divisors (see below), whose sum is σ = 187397760. Its totient is φ = 92465400.

The previous prime is 139623203. The next prime is 139623241. The reversal of 139623207 is 702326931.

It is a happy number.

139623207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139623207 - 2² = 139623203 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139623203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153657 + ... + 154562.

It is an arithmetic number, because the mean of its divisors is an integer number (23424720).

Almost surely, 2^139623207 is an apocalyptic number.

139623207 is a deficient number, since it is larger than the sum of its proper divisors (47774553).

139623207 is a wasteful number, since it uses less digits than its factorization.

139623207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308373.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 139623207 is about 11816.2264280945. The cubic root of 139623207 is about 518.7831594035.

The spelling of 139623207 in words is "one hundred thirty-nine million, six hundred twenty-three thousand, two hundred seven".