13440465 has 16 divisors (see below), whose sum is σ = 23894400. Its totient is φ = 7168176.

The previous prime is 13440461. The next prime is 13440473. The reversal of 13440465 is 56404431.

13440465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13440465 - 2² = 13440461 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (13440461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49645 + ... + 49914.

It is an arithmetic number, because the mean of its divisors is an integer number (1493400).

Almost surely, 2^13440465 is an apocalyptic number.

13440465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13440465 is a deficient number, since it is larger than the sum of its proper divisors (10453935).

13440465 is an equidigital number, since it uses as much as digits as its factorization.

13440465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99573 (or 99567 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 13440465 is about 3666.1239749905. The cubic root of 13440465 is about 237.7596200667.

Adding to 13440465 its reverse (56404431), we get a palindrome (69844896).

The spelling of 13440465 in words is "thirteen million, four hundred forty thousand, four hundred sixty-five".