13404503421 has 6 divisors (see below), whose sum is σ = 19362060510. Its totient is φ = 8936335608.

The previous prime is 13404503419. The next prime is 13404503459. The reversal of 13404503421 is 12430540431.

It is a happy number.

13404503421 is a `hidden beast` number, since 134 + 0 + 4 + 503 + 4 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10943252100 + 2461251321 = 104610^2 + 49611^2 .

It is not a de Polignac number, because 13404503421 - 2¹ = 13404503419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13404503491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 744694626 + ... + 744694643.

It is an arithmetic number, because the mean of its divisors is an integer number (3227010085).

Almost surely, 2^13404503421 is an apocalyptic number.

It is an amenable number.

13404503421 is a deficient number, since it is larger than the sum of its proper divisors (5957557089).

13404503421 is a wasteful number, since it uses less digits than its factorization.

13404503421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489389275 (or 1489389272 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 13404503421 in words is "thirteen billion, four hundred four million, five hundred three thousand, four hundred twenty-one".