13639417 has 8 divisors (see below), whose sum is σ = 15124032. Its totient is φ = 12195600.

The previous prime is 13639361. The next prime is 13639427. The reversal of 13639417 is 71493631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13639417 - 2⁷ = 13639289 is a prime.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (13639427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9493 + ... + 10834.

It is an arithmetic number, because the mean of its divisors is an integer number (1890504).

Almost surely, 2^13639417 is an apocalyptic number.

It is an amenable number.

13639417 is a deficient number, since it is larger than the sum of its proper divisors (1484615).

13639417 is a wasteful number, since it uses less digits than its factorization.

13639417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20399.

The product of its digits is 13608, while the sum is 34.

The square root of 13639417 is about 3693.1581336303. The cubic root of 13639417 is about 238.9270214792.

Adding to 13639417 its product of digits (13608), we get a square (13653025 = 3695²).

The spelling of 13639417 in words is "thirteen million, six hundred thirty-nine thousand, four hundred seventeen".