13945823 has 2 divisors, whose sum is σ = 13945824. Its totient is φ = 13945822.

The previous prime is 13945819. The next prime is 13945853. The reversal of 13945823 is 32854931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13945823 - 2² = 13945819 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13945853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6972911 + 6972912.

It is an arithmetic number, because the mean of its divisors is an integer number (6972912).

Almost surely, 2^13945823 is an apocalyptic number.

13945823 is a deficient number, since it is larger than the sum of its proper divisors (1).

13945823 is an equidigital number, since it uses as much as digits as its factorization.

13945823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 13945823 is about 3734.4106630096. The cubic root of 13945823 is about 240.7029333890.

The spelling of 13945823 in words is "thirteen million, nine hundred forty-five thousand, eight hundred twenty-three".