13943487 has 8 divisors (see below), whose sum is σ = 19093936. Its totient is φ = 9044352.

The previous prime is 13943483. The next prime is 13943533. The reversal of 13943487 is 78434931.

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

It is not a de Polignac number, because 13943487 - 2² = 13943483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13943483) 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, 62698 + ... + 62919.

It is an arithmetic number, because the mean of its divisors is an integer number (2386742).

Almost surely, 2^13943487 is an apocalyptic number.

13943487 is a deficient number, since it is larger than the sum of its proper divisors (5150449).

13943487 is a wasteful number, since it uses less digits than its factorization.

13943487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125657.

The product of its digits is 72576, while the sum is 39.

The square root of 13943487 is about 3734.0978830234. The cubic root of 13943487 is about 240.6894929619.

The spelling of 13943487 in words is "thirteen million, nine hundred forty-three thousand, four hundred eighty-seven".