13240477 has 4 divisors (see below), whose sum is σ = 13457596. Its totient is φ = 13023360.

The previous prime is 13240463. The next prime is 13240481. The reversal of 13240477 is 77404231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77404231 = 233 ⋅332207.

It can be written as a sum of positive squares in 2 ways, for example, as 3437316 + 9803161 = 1854^2 + 3131^2 .

It is a cyclic number.

It is not a de Polignac number, because 13240477 - 2⁷ = 13240349 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 (13240457) 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, 108468 + ... + 108589.

It is an arithmetic number, because the mean of its divisors is an integer number (3364399).

Almost surely, 2^13240477 is an apocalyptic number.

It is an amenable number.

13240477 is a deficient number, since it is larger than the sum of its proper divisors (217119).

13240477 is an equidigital number, since it uses as much as digits as its factorization.

13240477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217118.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 13240477 is about 3638.7466248696. The cubic root of 13240477 is about 236.5744706902.

The spelling of 13240477 in words is "thirteen million, two hundred forty thousand, four hundred seventy-seven".