13421773 has 8 divisors (see below), whose sum is σ = 13770648. Its totient is φ = 13076544.

The previous prime is 13421767. The next prime is 13421783. The reversal of 13421773 is 37712431.

It can be written as a sum of positive squares in 4 ways, for example, as 2683044 + 10738729 = 1638^2 + 3277^2 .

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 13421773 - 2¹³ = 13413581 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421783) 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, 7515 + ... + 9127.

It is an arithmetic number, because the mean of its divisors is an integer number (1721331).

It is a Poulet number, since it divides 2^13421772-1.

Almost surely, 2^13421773 is an apocalyptic number.

It is an amenable number.

13421773 is a deficient number, since it is larger than the sum of its proper divisors (348875).

13421773 is a wasteful number, since it uses less digits than its factorization.

13421773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 3528, while the sum is 28.

The square root of 13421773 is about 3663.5738016314. The cubic root of 13421773 is about 237.6493494614.

The spelling of 13421773 in words is "thirteen million, four hundred twenty-one thousand, seven hundred seventy-three".