13920923 has 2 divisors, whose sum is σ = 13920924. Its totient is φ = 13920922.

The previous prime is 13920913. The next prime is 13920937. The reversal of 13920923 is 32902931.

It is a weak prime.

It is an emirp because it is prime and its reverse (32902931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13920923 - 2⁶ = 13920859 is a prime.

It is equal to p₉₀₅₃₄₈ and since 13920923 and 905348 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (13920913) 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 as a sum of consecutive naturals, namely, 6960461 + 6960462.

It is an arithmetic number, because the mean of its divisors is an integer number (6960462).

Almost surely, 2^13920923 is an apocalyptic number.

13920923 is a deficient number, since it is larger than the sum of its proper divisors (1).

13920923 is an equidigital number, since it uses as much as digits as its factorization.

13920923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 13920923 is about 3731.0753141688. The cubic root of 13920923 is about 240.5595912170.

The spelling of 13920923 in words is "thirteen million, nine hundred twenty thousand, nine hundred twenty-three".