13400011409 has 4 divisors (see below), whose sum is σ = 13404420900. Its totient is φ = 13395601920.

The previous prime is 13400011369. The next prime is 13400011441. The reversal of 13400011409 is 90411000431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13155401809 + 244609600 = 114697^2 + 15640^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13400011409 is a prime.

It is a super-2 number, since 2×13400011409² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13400011489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2200184 + ... + 2206265.

It is an arithmetic number, because the mean of its divisors is an integer number (3351105225).

Almost surely, 2^13400011409 is an apocalyptic number.

It is an amenable number.

13400011409 is a deficient number, since it is larger than the sum of its proper divisors (4409491).

13400011409 is an equidigital number, since it uses as much as digits as its factorization.

13400011409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409490.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 13400011409 in words is "thirteen billion, four hundred million, eleven thousand, four hundred nine".