13404861 has 24 divisors (see below), whose sum is σ = 20527520. Its totient is φ = 8405856.

The previous prime is 13404829. The next prime is 13404877. The reversal of 13404861 is 16840431.

It is not a de Polignac number, because 13404861 - 2⁵ = 13404829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404761) 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 23 ways as a sum of consecutive naturals, for example, 47226 + ... + 47508.

Almost surely, 2^13404861 is an apocalyptic number.

It is an amenable number.

13404861 is a deficient number, since it is larger than the sum of its proper divisors (7122659).

13404861 is a wasteful number, since it uses less digits than its factorization.

13404861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 13404861 is about 3661.2649453433. The cubic root of 13404861 is about 237.5494914404.

The spelling of 13404861 in words is "thirteen million, four hundred four thousand, eight hundred sixty-one".