12401409 has 8 divisors (see below), whose sum is σ = 16565472. Its totient is φ = 8252480.

The previous prime is 12401399. The next prime is 12401429. The reversal of 12401409 is 90410421.

12401409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12401409 - 2⁸ = 12401153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12401429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1707 + ... + 5264.

It is an arithmetic number, because the mean of its divisors is an integer number (2070684).

Almost surely, 2^12401409 is an apocalyptic number.

It is an amenable number.

12401409 is a deficient number, since it is larger than the sum of its proper divisors (4164063).

12401409 is an equidigital number, since it uses as much as digits as its factorization.

12401409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7567.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 12401409 is about 3521.5634312050. The cubic root of 12401409 is about 231.4676719377.

The spelling of 12401409 in words is "twelve million, four hundred one thousand, four hundred nine".