13987473 has 8 divisors (see below), whose sum is σ = 19460928. Its totient is φ = 8919504.

The previous prime is 13987459. The next prime is 13987487. The reversal of 13987473 is 37478931.

It is an interprime number because it is at equal distance from previous prime (13987459) and next prime (13987487).

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

It is not a de Polignac number, because 13987473 - 2⁸ = 13987217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13987403) 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, 101290 + ... + 101427.

It is an arithmetic number, because the mean of its divisors is an integer number (2432616).

Almost surely, 2^13987473 is an apocalyptic number.

It is an amenable number.

13987473 is a deficient number, since it is larger than the sum of its proper divisors (5473455).

13987473 is a wasteful number, since it uses less digits than its factorization.

13987473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202743.

The product of its digits is 127008, while the sum is 42.

The square root of 13987473 is about 3739.9830213518. The cubic root of 13987473 is about 240.9423196039.

The spelling of 13987473 in words is "thirteen million, nine hundred eighty-seven thousand, four hundred seventy-three".