13679421 has 8 divisors (see below), whose sum is σ = 20844864. Its totient is φ = 7816800.

The previous prime is 13679399. The next prime is 13679423. The reversal of 13679421 is 12497631.

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

It is not a de Polignac number, because 13679421 - 2⁷ = 13679293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13679423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325680 + ... + 325721.

It is an arithmetic number, because the mean of its divisors is an integer number (2605608).

Almost surely, 2^13679421 is an apocalyptic number.

It is an amenable number.

13679421 is a deficient number, since it is larger than the sum of its proper divisors (7165443).

13679421 is an equidigital number, since it uses as much as digits as its factorization.

13679421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651411.

The product of its digits is 9072, while the sum is 33.

The square root of 13679421 is about 3698.5701291175. The cubic root of 13679421 is about 239.1603820714.

The spelling of 13679421 in words is "thirteen million, six hundred seventy-nine thousand, four hundred twenty-one".