13777923 has 4 divisors (see below), whose sum is σ = 18370568. Its totient is φ = 9185280.

The previous prime is 13777921. The next prime is 13777937. The reversal of 13777923 is 32977731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32977731 = 3 ⋅10992577.

It is not a de Polignac number, because 13777923 - 2¹ = 13777921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13777921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2296318 + ... + 2296323.

It is an arithmetic number, because the mean of its divisors is an integer number (4592642).

Almost surely, 2^13777923 is an apocalyptic number.

13777923 is a deficient number, since it is larger than the sum of its proper divisors (4592645).

13777923 is an equidigital number, since it uses as much as digits as its factorization.

13777923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592644.

The product of its digits is 55566, while the sum is 39.

The square root of 13777923 is about 3711.8624705126. The cubic root of 13777923 is about 239.7330538869.

The spelling of 13777923 in words is "thirteen million, seven hundred seventy-seven thousand, nine hundred twenty-three".