1343544440 has 32 divisors (see below), whose sum is σ = 3454829280. Its totient is φ = 460643712.

The previous prime is 1343544439. The next prime is 1343544479. The reversal of 1343544440 is 444453431.

It is a super-2 number, since 2×1343544440² = 3610223324509827200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1343544397 and 1343544406.

It is a congruent number.

It is an unprimeable number.

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, 2398907 + ... + 2399466.

It is an arithmetic number, because the mean of its divisors is an integer number (107963415).

Almost surely, 2^1343544440 is an apocalyptic number.

1343544440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343544440 is an abundant number, since it is smaller than the sum of its proper divisors (2111284840).

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

1343544440 is a wasteful number, since it uses less digits than its factorization.

1343544440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4798391 (or 4798387 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 32.

The square root of 1343544440 is about 36654.3918241730. The cubic root of 1343544440 is about 1103.4449684164. Note that the first 3 decimals are identical.

Adding to 1343544440 its reverse (444453431), we get a palindrome (1787997871).

It can be divided in two parts, 13435 and 44440, that added together give a palindrome (57875).

The spelling of 1343544440 in words is "one billion, three hundred forty-three million, five hundred forty-four thousand, four hundred forty".