13440497 has 8 divisors (see below), whose sum is σ = 15735552. Its totient is φ = 11239200.

The previous prime is 13440473. The next prime is 13440529. The reversal of 13440497 is 79404431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13440497 - 2⁸ = 13440241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13440407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23129 + ... + 23702.

It is an arithmetic number, because the mean of its divisors is an integer number (1966944).

Almost surely, 2^13440497 is an apocalyptic number.

It is an amenable number.

13440497 is a deficient number, since it is larger than the sum of its proper divisors (2295055).

13440497 is an equidigital number, since it uses as much as digits as its factorization.

13440497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46879.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 13440497 is about 3666.1283392702. The cubic root of 13440497 is about 237.7598087581.

The spelling of 13440497 in words is "thirteen million, four hundred forty thousand, four hundred ninety-seven".