16388423 has 4 divisors (see below), whose sum is σ = 16397688. Its totient is φ = 16379160.

The previous prime is 16388419. The next prime is 16388467. The reversal of 16388423 is 32488361.

It is a happy number.

16388423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 16388423 - 2² = 16388419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16388413) 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, 1061 + ... + 5822.

It is an arithmetic number, because the mean of its divisors is an integer number (4099422).

Almost surely, 2^16388423 is an apocalyptic number.

16388423 is a deficient number, since it is larger than the sum of its proper divisors (9265).

16388423 is an equidigital number, since it uses as much as digits as its factorization.

16388423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9264.

The product of its digits is 27648, while the sum is 35.

The square root of 16388423 is about 4048.2617257287. The cubic root of 16388423 is about 254.0070213200.

The spelling of 16388423 in words is "sixteen million, three hundred eighty-eight thousand, four hundred twenty-three".