13440454 has 4 divisors (see below), whose sum is σ = 20160684. Its totient is φ = 6720226.

The previous prime is 13440437. The next prime is 13440461. The reversal of 13440454 is 45404431.

13440454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45404431 = 43 ⋅1055917.

It is a super-2 number, since 2×13440454² = 361291607452232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3360112 + ... + 3360115.

It is an arithmetic number, because the mean of its divisors is an integer number (5040171).

Almost surely, 2^13440454 is an apocalyptic number.

13440454 is a deficient number, since it is larger than the sum of its proper divisors (6720230).

13440454 is an equidigital number, since it uses as much as digits as its factorization.

13440454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720229.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 13440454 is about 3666.1224747681. The cubic root of 13440454 is about 237.7595552040.

Adding to 13440454 its reverse (45404431), we get a palindrome (58844885).

The spelling of 13440454 in words is "thirteen million, four hundred forty thousand, four hundred fifty-four".