1440412013 has 8 divisors (see below), whose sum is σ = 1449796536. Its totient is φ = 1431040000.

The previous prime is 1440412009. The next prime is 1440412019. The reversal of 1440412013 is 3102140441.

It can be written as a sum of positive squares in 4 ways, for example, as 109767529 + 1330644484 = 10477^2 + 36478^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1440412013 - 2² = 1440412009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440412019) 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 7 ways as a sum of consecutive naturals, for example, 358013 + ... + 362013.

It is an arithmetic number, because the mean of its divisors is an integer number (181224567).

Almost surely, 2^1440412013 is an apocalyptic number.

It is an amenable number.

1440412013 is a deficient number, since it is larger than the sum of its proper divisors (9384523).

1440412013 is a wasteful number, since it uses less digits than its factorization.

1440412013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1440412013 is about 37952.7602816976. The cubic root of 1440412013 is about 1129.3509241309.

Adding to 1440412013 its reverse (3102140441), we get a palindrome (4542552454).

The spelling of 1440412013 in words is "one billion, four hundred forty million, four hundred twelve thousand, thirteen".