13409853 has 4 divisors (see below), whose sum is σ = 17879808. Its totient is φ = 8939900.

The previous prime is 13409843. The next prime is 13409867. The reversal of 13409853 is 35890431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35890431 = 3 ⋅11963477.

It is a cyclic number.

It is not a de Polignac number, because 13409853 - 2⁶ = 13409789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409843) 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, 2234973 + ... + 2234978.

It is an arithmetic number, because the mean of its divisors is an integer number (4469952).

Almost surely, 2^13409853 is an apocalyptic number.

It is an amenable number.

13409853 is a deficient number, since it is larger than the sum of its proper divisors (4469955).

13409853 is an equidigital number, since it uses as much as digits as its factorization.

13409853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469954.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 13409853 is about 3661.9466134831. The cubic root of 13409853 is about 237.5789757667.

The spelling of 13409853 in words is "thirteen million, four hundred nine thousand, eight hundred fifty-three".