1440540434437 has 8 divisors (see below), whose sum is σ = 1552605378296. Its totient is φ = 1328654653632.

The previous prime is 1440540434413. The next prime is 1440540434497. The reversal of 1440540434437 is 7344340450441.

It can be written as a sum of positive squares in 4 ways, for example, as 294508094596 + 1146032339841 = 542686^2 + 1070529^2 .

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 1440540434437 - 2⁷ = 1440540434309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440540434393 and 1440540434402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440540434497) 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, 44774058 + ... + 44806219.

It is an arithmetic number, because the mean of its divisors is an integer number (194075672287).

Almost surely, 2^{1440540434437} is an apocalyptic number.

It is an amenable number.

1440540434437 is a deficient number, since it is larger than the sum of its proper divisors (112064943859).

1440540434437 is a wasteful number, since it uses less digits than its factorization.

1440540434437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89581527.

The product of its (nonzero) digits is 1290240, while the sum is 43.

Adding to 1440540434437 its reverse (7344340450441), we get a palindrome (8784880884878).

The spelling of 1440540434437 in words is "one trillion, four hundred forty billion, five hundred forty million, four hundred thirty-four thousand, four hundred thirty-seven".