13980857 has 8 divisors (see below), whose sum is σ = 15664512. Its totient is φ = 12366000.

The previous prime is 13980853. The next prime is 13980859. The reversal of 13980857 is 75808931.

It is a happy number.

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 13980857 - 2² = 13980853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13980853) 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, 16769 + ... + 17582.

It is an arithmetic number, because the mean of its divisors is an integer number (1958064).

Almost surely, 2^13980857 is an apocalyptic number.

It is an amenable number.

13980857 is a deficient number, since it is larger than the sum of its proper divisors (1683655).

13980857 is a wasteful number, since it uses less digits than its factorization.

13980857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34399.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 13980857 is about 3739.0984207426. The cubic root of 13980857 is about 240.9043254697.

The spelling of 13980857 in words is "thirteen million, nine hundred eighty thousand, eight hundred fifty-seven".