13449440 has 24 divisors (see below), whose sum is σ = 31774680. Its totient is φ = 5379712.

The previous prime is 13449433. The next prime is 13449467. The reversal of 13449440 is 4494431.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41870 + ... + 42189.

It is an arithmetic number, because the mean of its divisors is an integer number (1323945).

Almost surely, 2^13449440 is an apocalyptic number.

13449440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13449440 is an abundant number, since it is smaller than the sum of its proper divisors (18325240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13449440 is an equidigital number, since it uses as much as digits as its factorization.

13449440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84074 (or 84066 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 13449440 is about 3667.3478155201. The cubic root of 13449440 is about 237.8125303837.

The spelling of 13449440 in words is "thirteen million, four hundred forty-nine thousand, four hundred forty".