6440360441 has 16 divisors (see below), whose sum is σ = 6829012800. Its totient is φ = 6056791488.

The previous prime is 6440360429. The next prime is 6440360449. The reversal of 6440360441 is 1440630446.

It is a cyclic number.

It is not a de Polignac number, because 6440360441 - 2²² = 6436166137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6440360398 and 6440360407.

It is not an unprimeable number, because it can be changed into a prime (6440360449) 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, 3111755 + ... + 3113823.

It is an arithmetic number, because the mean of its divisors is an integer number (426813300).

Almost surely, 2^6440360441 is an apocalyptic number.

It is an amenable number.

6440360441 is a deficient number, since it is larger than the sum of its proper divisors (388652359).

6440360441 is a wasteful number, since it uses less digits than its factorization.

6440360441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208.

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 6440360441 is about 80251.8563087484. The cubic root of 6440360441 is about 1860.5302031282.

Adding to 6440360441 its reverse (1440630446), we get a palindrome (7880990887).

The spelling of 6440360441 in words is "six billion, four hundred forty million, three hundred sixty thousand, four hundred forty-one".