13474421 has 4 divisors (see below), whose sum is σ = 14267052. Its totient is φ = 12681792.

The previous prime is 13474411. The next prime is 13474423. The reversal of 13474421 is 12447431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12447431 = 157 ⋅79283.

It can be written as a sum of positive squares in 2 ways, for example, as 4558225 + 8916196 = 2135^2 + 2986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13474421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13474423) 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, 396290 + ... + 396323.

It is an arithmetic number, because the mean of its divisors is an integer number (3566763).

Almost surely, 2^13474421 is an apocalyptic number.

It is an amenable number.

13474421 is a deficient number, since it is larger than the sum of its proper divisors (792631).

13474421 is an equidigital number, since it uses as much as digits as its factorization.

13474421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792630.

The product of its digits is 2688, while the sum is 26.

The square root of 13474421 is about 3670.7521027713. The cubic root of 13474421 is about 237.9596770423.

The spelling of 13474421 in words is "thirteen million, four hundred seventy-four thousand, four hundred twenty-one".