16139223 has 16 divisors (see below), whose sum is σ = 24249600. Its totient is φ = 10606680.

The previous prime is 16139203. The next prime is 16139243. The reversal of 16139223 is 32293161.

It is an interprime number because it is at equal distance from previous prime (16139203) and next prime (16139243).

It is not a de Polignac number, because 16139223 - 2⁵ = 16139191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16139203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2293 + ... + 6126.

It is an arithmetic number, because the mean of its divisors is an integer number (1515600).

Almost surely, 2^16139223 is an apocalyptic number.

16139223 is a deficient number, since it is larger than the sum of its proper divisors (8110377).

16139223 is an equidigital number, since it uses as much as digits as its factorization.

16139223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8499 (or 8493 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 16139223 is about 4017.3651813098. The cubic root of 16139223 is about 252.7129752315.

The spelling of 16139223 in words is "sixteen million, one hundred thirty-nine thousand, two hundred twenty-three".