13464421 has 4 divisors (see below), whose sum is σ = 13482700. Its totient is φ = 13446144.

The previous prime is 13464403. The next prime is 13464431. The reversal of 13464421 is 12446431.

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 1809025 + 11655396 = 1345^2 + 3414^2 .

It is a cyclic number.

It is not a de Polignac number, because 13464421 - 2⁵ = 13464389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13464431) 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, 7986 + ... + 9523.

It is an arithmetic number, because the mean of its divisors is an integer number (3370675).

Almost surely, 2^13464421 is an apocalyptic number.

It is an amenable number.

13464421 is a deficient number, since it is larger than the sum of its proper divisors (18279).

13464421 is an equidigital number, since it uses as much as digits as its factorization.

13464421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18278.

The product of its digits is 2304, while the sum is 25.

The square root of 13464421 is about 3669.3897312769. The cubic root of 13464421 is about 237.9007954600.

The spelling of 13464421 in words is "thirteen million, four hundred sixty-four thousand, four hundred twenty-one".