14638405 has 4 divisors (see below), whose sum is σ = 17566092. Its totient is φ = 11710720.

The previous prime is 14638399. The next prime is 14638409. The reversal of 14638405 is 50483641.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4186116 + 10452289 = 2046^2 + 3233^2 .

It is not a de Polignac number, because 14638405 - 2³ = 14638397 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 (14638409) 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, 1463836 + ... + 1463845.

It is an arithmetic number, because the mean of its divisors is an integer number (4391523).

Almost surely, 2^14638405 is an apocalyptic number.

It is an amenable number.

14638405 is a deficient number, since it is larger than the sum of its proper divisors (2927687).

14638405 is an equidigital number, since it uses as much as digits as its factorization.

14638405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2927686.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 14638405 is about 3826.0168583005. The cubic root of 14638405 is about 244.6233557444.

The spelling of 14638405 in words is "fourteen million, six hundred thirty-eight thousand, four hundred five".