139172223 has 8 divisors (see below), whose sum is σ = 189064368. Its totient is φ = 91030784.

The previous prime is 139172197. The next prime is 139172239. The reversal of 139172223 is 322271931.

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

It is a cyclic number.

It is not a de Polignac number, because 139172223 - 2⁵ = 139172191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139171223) 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, 437490 + ... + 437807.

It is an arithmetic number, because the mean of its divisors is an integer number (23633046).

Almost surely, 2^139172223 is an apocalyptic number.

139172223 is a deficient number, since it is larger than the sum of its proper divisors (49892145).

139172223 is an equidigital number, since it uses as much as digits as its factorization.

139172223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875353.

The product of its digits is 4536, while the sum is 30.

The square root of 139172223 is about 11797.1277436501. The cubic root of 139172223 is about 518.2239991153.

The spelling of 139172223 in words is "one hundred thirty-nine million, one hundred seventy-two thousand, two hundred twenty-three".