13409400 has 48 divisors (see below), whose sum is σ = 41571000. Its totient is φ = 3575680.

The previous prime is 13409369. The next prime is 13409401. The reversal of 13409400 is 490431.

13409400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 10575 + ... + 11774.

Almost surely, 2^13409400 is an apocalyptic number.

13409400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13409400 is an abundant number, since it is smaller than the sum of its proper divisors (28161600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13409400 is a wasteful number, since it uses less digits than its factorization.

13409400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22368 (or 22359 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 13409400 is about 3661.8847606117. The cubic root of 13409400 is about 237.5763005078.

Adding to 13409400 its reverse (490431), we get a palindrome (13899831).

The spelling of 13409400 in words is "thirteen million, four hundred nine thousand, four hundred".