13457893 has 4 divisors (see below), whose sum is σ = 13532428. Its totient is φ = 13383360.

The previous prime is 13457891. The next prime is 13457923. The reversal of 13457893 is 39875431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39875431 = 659 ⋅60509.

It can be written as a sum of positive squares in 2 ways, for example, as 3928324 + 9529569 = 1982^2 + 3087^2 .

It is a cyclic number.

It is not a de Polignac number, because 13457893 - 2¹ = 13457891 is a prime.

It is a super-2 number, since 2×13457893² = 362229767998898, which contains 22 as substring.

It is the 3669-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13457891) by changing a digit.

It is a nontrivial repunit in base 3668.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36996 + ... + 37357.

It is an arithmetic number, because the mean of its divisors is an integer number (3383107).

Almost surely, 2^13457893 is an apocalyptic number.

It is an amenable number.

13457893 is a deficient number, since it is larger than the sum of its proper divisors (74535).

13457893 is an equidigital number, since it uses as much as digits as its factorization.

13457893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74534.

The product of its digits is 90720, while the sum is 40.

The square root of 13457893 is about 3668.5001022216. The cubic root of 13457893 is about 237.8623418336.

The spelling of 13457893 in words is "thirteen million, four hundred fifty-seven thousand, eight hundred ninety-three".