13405401 has 24 divisors (see below), whose sum is σ = 21012264. Its totient is φ = 8202240.

The previous prime is 13405397. The next prime is 13405411. The reversal of 13405401 is 10450431.

It is a happy number.

13405401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9801 + 13395600 = 99^2 + 3660^2 .

It is not a de Polignac number, because 13405401 - 2² = 13405397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13405411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5205 + ... + 7341.

It is an arithmetic number, because the mean of its divisors is an integer number (875511).

Almost surely, 2^13405401 is an apocalyptic number.

It is an amenable number.

13405401 is a deficient number, since it is larger than the sum of its proper divisors (7606863).

13405401 is a wasteful number, since it uses less digits than its factorization.

13405401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2198 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 13405401 is about 3661.3386896052. The cubic root of 13405401 is about 237.5526812037.

Adding to 13405401 its reverse (10450431), we get a palindrome (23855832).

The spelling of 13405401 in words is "thirteen million, four hundred five thousand, four hundred one".