13451409 has 12 divisors (see below), whose sum is σ = 19676800. Its totient is φ = 8853624.

The previous prime is 13451401. The next prime is 13451413. The reversal of 13451409 is 90415431.

It is not a de Polignac number, because 13451409 - 2³ = 13451401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13451401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8749 + ... + 10170.

Almost surely, 2^13451409 is an apocalyptic number.

It is an amenable number.

13451409 is a deficient number, since it is larger than the sum of its proper divisors (6225391).

13451409 is a wasteful number, since it uses less digits than its factorization.

13451409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19004 (or 19001 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 13451409 is about 3667.6162558261. The cubic root of 13451409 is about 237.8241350806.

The spelling of 13451409 in words is "thirteen million, four hundred fifty-one thousand, four hundred nine".