13223893 has 2 divisors, whose sum is σ = 13223894. Its totient is φ = 13223892.

The previous prime is 13223879. The next prime is 13223923. The reversal of 13223893 is 39832231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13010449 + 213444 = 3607^2 + 462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13223843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6611946 + 6611947.

It is an arithmetic number, because the mean of its divisors is an integer number (6611947).

Almost surely, 2^13223893 is an apocalyptic number.

It is an amenable number.

13223893 is a deficient number, since it is larger than the sum of its proper divisors (1).

13223893 is an equidigital number, since it uses as much as digits as its factorization.

13223893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 13223893 is about 3636.4671042098. The cubic root of 13223893 is about 236.4756577801.

It can be divided in two parts, 132 and 23893, that added together give a square (24025 = 155²).

The spelling of 13223893 in words is "thirteen million, two hundred twenty-three thousand, eight hundred ninety-three".