13351409 has 4 divisors (see below), whose sum is σ = 14136804. Its totient is φ = 12566016.

The previous prime is 13351399. The next prime is 13351439. The reversal of 13351409 is 90415331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90415331 = 1823 ⋅49597.

It can be written as a sum of positive squares in 2 ways, for example, as 11751184 + 1600225 = 3428^2 + 1265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13351409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13351439) 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, 392672 + ... + 392705.

It is an arithmetic number, because the mean of its divisors is an integer number (3534201).

Almost surely, 2^13351409 is an apocalyptic number.

It is an amenable number.

13351409 is a deficient number, since it is larger than the sum of its proper divisors (785395).

13351409 is an equidigital number, since it uses as much as digits as its factorization.

13351409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785394.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 13351409 is about 3653.9579910010. The cubic root of 13351409 is about 237.2333272761.

It can be divided in two parts, 1335 and 1409, that added together give a cube (2744 = 14³).

The spelling of 13351409 in words is "thirteen million, three hundred fifty-one thousand, four hundred nine".