13858493 has 12 divisors (see below), whose sum is σ = 15527484. Its totient is φ = 12355200.

The previous prime is 13858469. The next prime is 13858499. The reversal of 13858493 is 39485831.

It can be written as a sum of positive squares in 2 ways, for example, as 9351364 + 4507129 = 3058^2 + 2123^2 .

It is not a de Polignac number, because 13858493 - 2⁸ = 13858237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13858493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13858499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5333 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (1293957).

Almost surely, 2^13858493 is an apocalyptic number.

It is an amenable number.

13858493 is a deficient number, since it is larger than the sum of its proper divisors (1668991).

13858493 is a wasteful number, since it uses less digits than its factorization.

13858493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236 (or 2225 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 13858493 is about 3722.6996924275. The cubic root of 13858493 is about 240.1994464772.

The spelling of 13858493 in words is "thirteen million, eight hundred fifty-eight thousand, four hundred ninety-three".