13409641 has 4 divisors (see below), whose sum is σ = 15325312. Its totient is φ = 11493972.

The previous prime is 13409633. The next prime is 13409647. The reversal of 13409641 is 14690431.

13409641 is digitally balanced in base 3, 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 Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13409641 - 2³ = 13409633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13409647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 957825 + ... + 957838.

It is an arithmetic number, because the mean of its divisors is an integer number (3831328).

Almost surely, 2^13409641 is an apocalyptic number.

It is an amenable number.

13409641 is a deficient number, since it is larger than the sum of its proper divisors (1915671).

13409641 is an equidigital number, since it uses as much as digits as its factorization.

13409641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915670.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 13409641 is about 3661.9176670155. The cubic root of 13409641 is about 237.5777237766.

The spelling of 13409641 in words is "thirteen million, four hundred nine thousand, six hundred forty-one".