13776973 has 4 divisors (see below), whose sum is σ = 15745120. Its totient is φ = 11808828.

The previous prime is 13776949. The next prime is 13777003. The reversal of 13776973 is 37967731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13776973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13776673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984063 + ... + 984076.

It is an arithmetic number, because the mean of its divisors is an integer number (3936280).

Almost surely, 2^13776973 is an apocalyptic number.

It is an amenable number.

13776973 is a deficient number, since it is larger than the sum of its proper divisors (1968147).

13776973 is an equidigital number, since it uses as much as digits as its factorization.

13776973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968146.

The product of its digits is 166698, while the sum is 43.

The square root of 13776973 is about 3711.7345002034. The cubic root of 13776973 is about 239.7275438248.

The spelling of 13776973 in words is "thirteen million, seven hundred seventy-six thousand, nine hundred seventy-three".