13439973 has 8 divisors (see below), whose sum is σ = 18863200. Its totient is φ = 8488368.

The previous prime is 13439939. The next prime is 13440001. The reversal of 13439973 is 37993431.

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

It is not a de Polignac number, because 13439973 - 2¹⁶ = 13374437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439773) 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 7 ways as a sum of consecutive naturals, for example, 117838 + ... + 117951.

It is an arithmetic number, because the mean of its divisors is an integer number (2357900).

Almost surely, 2^13439973 is an apocalyptic number.

It is an amenable number.

13439973 is a deficient number, since it is larger than the sum of its proper divisors (5423227).

13439973 is a wasteful number, since it uses less digits than its factorization.

13439973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235811.

The product of its digits is 61236, while the sum is 39.

The square root of 13439973 is about 3666.0568735359. The cubic root of 13439973 is about 237.7567188982.

The spelling of 13439973 in words is "thirteen million, four hundred thirty-nine thousand, nine hundred seventy-three".