139813223 has 4 divisors (see below), whose sum is σ = 152523528. Its totient is φ = 127102920.

The previous prime is 139813217. The next prime is 139813243. The reversal of 139813223 is 322318931.

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 139813223 - 2¹⁶ = 139747687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139813223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139813243) 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, 6355136 + ... + 6355157.

It is an arithmetic number, because the mean of its divisors is an integer number (38130882).

Almost surely, 2^139813223 is an apocalyptic number.

139813223 is a deficient number, since it is larger than the sum of its proper divisors (12710305).

139813223 is a wasteful number, since it uses less digits than its factorization.

139813223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12710304.

The product of its digits is 7776, while the sum is 32.

The square root of 139813223 is about 11824.2641631520. The cubic root of 139813223 is about 519.0183934982.

The spelling of 139813223 in words is "one hundred thirty-nine million, eight hundred thirteen thousand, two hundred twenty-three".