13623447 has 4 divisors (see below), whose sum is σ = 18164600. Its totient is φ = 9082296.

The previous prime is 13623431. The next prime is 13623451. The reversal of 13623447 is 74432631.

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

It is not a de Polignac number, because 13623447 - 2⁴ = 13623431 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13623427) 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, 2270572 + ... + 2270577.

It is an arithmetic number, because the mean of its divisors is an integer number (4541150).

Almost surely, 2^13623447 is an apocalyptic number.

13623447 is a deficient number, since it is larger than the sum of its proper divisors (4541153).

13623447 is an equidigital number, since it uses as much as digits as its factorization.

13623447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4541152.

The product of its digits is 12096, while the sum is 30.

The square root of 13623447 is about 3690.9953941992. The cubic root of 13623447 is about 238.8337341410.

The spelling of 13623447 in words is "thirteen million, six hundred twenty-three thousand, four hundred forty-seven".