13453447 has 4 divisors (see below), whose sum is σ = 15375376. Its totient is φ = 11531520.

The previous prime is 13453397. The next prime is 13453457. The reversal of 13453447 is 74435431.

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

It is a de Polignac number, because none of the positive numbers 2^k-13453447 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 (13453457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 960954 + ... + 960967.

It is an arithmetic number, because the mean of its divisors is an integer number (3843844).

Almost surely, 2^13453447 is an apocalyptic number.

13453447 is a deficient number, since it is larger than the sum of its proper divisors (1921929).

13453447 is an equidigital number, since it uses as much as digits as its factorization.

13453447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1921928.

The product of its digits is 20160, while the sum is 31.

The square root of 13453447 is about 3667.8940824402. The cubic root of 13453447 is about 237.8361452502.

Adding to 13453447 its reverse (74435431), we get a palindrome (87888878).

The spelling of 13453447 in words is "thirteen million, four hundred fifty-three thousand, four hundred forty-seven".