1344291440 has 40 divisors (see below), whose sum is σ = 3226305408. Its totient is φ = 520369920.

The previous prime is 1344291391. The next prime is 1344291449. The reversal of 1344291440 is 441924431.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1344291397 and 1344291406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1344291449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268547 + ... + 273506.

Almost surely, 2^1344291440 is an apocalyptic number.

1344291440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344291440 is an abundant number, since it is smaller than the sum of its proper divisors (1882013968).

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

1344291440 is a wasteful number, since it uses less digits than its factorization.

1344291440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542097 (or 542091 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1344291440 is about 36664.5801830595. The cubic root of 1344291440 is about 1103.6494327300.

The spelling of 1344291440 in words is "one billion, three hundred forty-four million, two hundred ninety-one thousand, four hundred forty".