13987465 has 4 divisors (see below), whose sum is σ = 16784964. Its totient is φ = 11189968.

The previous prime is 13987459. The next prime is 13987487. The reversal of 13987465 is 56478931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3798601 + 10188864 = 1949^2 + 3192^2 .

It is a cyclic number.

It is not a de Polignac number, because 13987465 - 2¹⁵ = 13954697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1398742 + ... + 1398751.

It is an arithmetic number, because the mean of its divisors is an integer number (4196241).

Almost surely, 2^13987465 is an apocalyptic number.

It is an amenable number.

13987465 is a deficient number, since it is larger than the sum of its proper divisors (2797499).

13987465 is an equidigital number, since it uses as much as digits as its factorization.

13987465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797498.

The product of its digits is 181440, while the sum is 43.

The square root of 13987465 is about 3739.9819518281. The cubic root of 13987465 is about 240.9422736691.

The spelling of 13987465 in words is "thirteen million, nine hundred eighty-seven thousand, four hundred sixty-five".