1440343413 has 6 divisors (see below), whose sum is σ = 2080496054. Its totient is φ = 960228936.

The previous prime is 1440343403. The next prime is 1440343427. The reversal of 1440343413 is 3143430441.

It can be written as a sum of positive squares in only one way, i.e., 1341976689 + 98366724 = 36633^2 + 9918^2 .

It is not a de Polignac number, because 1440343413 - 2⁵ = 1440343381 is a prime.

It is a super-3 number, since 3×1440343413³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440343403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80019070 + ... + 80019087.

Almost surely, 2^1440343413 is an apocalyptic number.

It is an amenable number.

1440343413 is a deficient number, since it is larger than the sum of its proper divisors (640152641).

1440343413 is a wasteful number, since it uses less digits than its factorization.

1440343413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160038163 (or 160038160 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 1440343413 is about 37951.8565158544. The cubic root of 1440343413 is about 1129.3329953016.

Adding to 1440343413 its reverse (3143430441), we get a palindrome (4583773854).

The spelling of 1440343413 in words is "one billion, four hundred forty million, three hundred forty-three thousand, four hundred thirteen".