13409471 has 4 divisors (see below), whose sum is σ = 13420944. Its totient is φ = 13398000.

The previous prime is 13409441. The next prime is 13409491. The reversal of 13409471 is 17490431.

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

It is a cyclic number.

It is not a de Polignac number, because 13409471 - 2¹⁴ = 13393087 is a prime.

It is a super-3 number, since 3×13409471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13409401) 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, 3755 + ... + 6396.

It is an arithmetic number, because the mean of its divisors is an integer number (3355236).

Almost surely, 2^13409471 is an apocalyptic number.

13409471 is a deficient number, since it is larger than the sum of its proper divisors (11473).

13409471 is a wasteful number, since it uses less digits than its factorization.

13409471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11472.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 13409471 is about 3661.8944550601. The cubic root of 13409471 is about 237.5767198128.

The spelling of 13409471 in words is "thirteen million, four hundred nine thousand, four hundred seventy-one".