13986057 has 4 divisors (see below), whose sum is σ = 18648080. Its totient is φ = 9324036.

The previous prime is 13986029. The next prime is 13986067. The reversal of 13986057 is 75068931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13986057 - 2¹⁴ = 13969673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13986017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2331007 + ... + 2331012.

It is an arithmetic number, because the mean of its divisors is an integer number (4662020).

Almost surely, 2^13986057 is an apocalyptic number.

It is an amenable number.

13986057 is a deficient number, since it is larger than the sum of its proper divisors (4662023).

13986057 is an equidigital number, since it uses as much as digits as its factorization.

13986057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662022.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 13986057 is about 3739.7937108883. The cubic root of 13986057 is about 240.9341888563.

The spelling of 13986057 in words is "thirteen million, nine hundred eighty-six thousand, fifty-seven".