12400411 has 4 divisors (see below), whose sum is σ = 12407824. Its totient is φ = 12393000.

The previous prime is 12400397. The next prime is 12400441. The reversal of 12400411 is 11400421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 11400421 = 17 ⋅670613.

It is a cyclic number.

It is not a de Polignac number, because 12400411 - 2⁵ = 12400379 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12400391 and 12400400.

It is not an unprimeable number, because it can be changed into a prime (12400441) 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, 121 + ... + 4981.

It is an arithmetic number, because the mean of its divisors is an integer number (3101956).

Almost surely, 2^12400411 is an apocalyptic number.

12400411 is a deficient number, since it is larger than the sum of its proper divisors (7413).

12400411 is an equidigital number, since it uses as much as digits as its factorization.

12400411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7412.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 12400411 is about 3521.4217299267. The cubic root of 12400411 is about 231.4614626719.

Adding to 12400411 its reverse (11400421), we get a palindrome (23800832).

The spelling of 12400411 in words is "twelve million, four hundred thousand, four hundred eleven".