13649477 has 4 divisors (see below), whose sum is σ = 13656876. Its totient is φ = 13642080.

The previous prime is 13649431. The next prime is 13649483. The reversal of 13649477 is 77494631.

13649477 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 11296321 + 2353156 = 3361^2 + 1534^2 .

It is a cyclic number.

It is not a de Polignac number, because 13649477 - 2¹⁸ = 13387333 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 (13649407) 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, 1577 + ... + 5457.

It is an arithmetic number, because the mean of its divisors is an integer number (3414219).

Almost surely, 2^13649477 is an apocalyptic number.

It is an amenable number.

13649477 is a deficient number, since it is larger than the sum of its proper divisors (7399).

13649477 is an equidigital number, since it uses as much as digits as its factorization.

13649477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7398.

The product of its digits is 127008, while the sum is 41.

The square root of 13649477 is about 3694.5198605502. The cubic root of 13649477 is about 238.9857486994.

The spelling of 13649477 in words is "thirteen million, six hundred forty-nine thousand, four hundred seventy-seven".