1340013444 has 48 divisors (see below), whose sum is σ = 3898223616. Its totient is φ = 348055200.

The previous prime is 1340013443. The next prime is 1340013463. The reversal of 1340013444 is 4443100431.

It is a super-2 number, since 2×1340013444² = 3591272060201482272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1340013443) 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, 724192 + ... + 726039.

It is an arithmetic number, because the mean of its divisors is an integer number (81212992).

Almost surely, 2^1340013444 is an apocalyptic number.

1340013444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1340013444 is an abundant number, since it is smaller than the sum of its proper divisors (2558210172).

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

1340013444 is a wasteful number, since it uses less digits than its factorization.

1340013444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450256 (or 1450254 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1340013444 is about 36606.1940660320. The cubic root of 1340013444 is about 1102.4774584169.

Adding to 1340013444 its reverse (4443100431), we get a palindrome (5783113875).

The spelling of 1340013444 in words is "one billion, three hundred forty million, thirteen thousand, four hundred forty-four".