13840546 has 4 divisors (see below), whose sum is σ = 20760822. Its totient is φ = 6920272.

The previous prime is 13840523. The next prime is 13840559. The reversal of 13840546 is 64504831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64504831 = 31 ⋅2080801.

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 408321 = 3665^2 + 639^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460135 + ... + 3460138.

Almost surely, 2^13840546 is an apocalyptic number.

13840546 is a deficient number, since it is larger than the sum of its proper divisors (6920276).

13840546 is an equidigital number, since it uses as much as digits as its factorization.

13840546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6920275.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 13840546 is about 3720.2884296785. The cubic root of 13840546 is about 240.0957141381.

The spelling of 13840546 in words is "thirteen million, eight hundred forty thousand, five hundred forty-six".