13440367 has 4 divisors (see below), whose sum is σ = 13570960. Its totient is φ = 13309776.

The previous prime is 13440341. The next prime is 13440379. The reversal of 13440367 is 76304431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76304431 = 7 ⋅10900633.

It is a cyclic number.

It is not a de Polignac number, because 13440367 - 2¹¹ = 13438319 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 (13440307) 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, 65142 + ... + 65347.

It is an arithmetic number, because the mean of its divisors is an integer number (3392740).

Almost surely, 2^13440367 is an apocalyptic number.

13440367 is a deficient number, since it is larger than the sum of its proper divisors (130593).

13440367 is a wasteful number, since it uses less digits than its factorization.

13440367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130592.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 13440367 is about 3666.1106093516. The cubic root of 13440367 is about 237.7590421973.

Adding to 13440367 its reverse (76304431), we get a palindrome (89744798).

The spelling of 13440367 in words is "thirteen million, four hundred forty thousand, three hundred sixty-seven".