13858487 has 4 divisors (see below), whose sum is σ = 14001456. Its totient is φ = 13715520.

The previous prime is 13858469. The next prime is 13858499. The reversal of 13858487 is 78485831.

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

It is a cyclic number.

It is not a de Polignac number, because 13858487 - 2⁸ = 13858231 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 (13858447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71339 + ... + 71532.

It is an arithmetic number, because the mean of its divisors is an integer number (3500364).

Almost surely, 2^13858487 is an apocalyptic number.

13858487 is a deficient number, since it is larger than the sum of its proper divisors (142969).

13858487 is an equidigital number, since it uses as much as digits as its factorization.

13858487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142968.

The product of its digits is 215040, while the sum is 44.

The square root of 13858487 is about 3722.6988865607. The cubic root of 13858487 is about 240.1994118126.

The spelling of 13858487 in words is "thirteen million, eight hundred fifty-eight thousand, four hundred eighty-seven".