6400450241 has 8 divisors (see below), whose sum is σ = 6777649800. Its totient is φ = 6023328768.

The previous prime is 6400450237. The next prime is 6400450253. The reversal of 6400450241 is 1420540046.

It can be written as a sum of positive squares in 4 ways, for example, as 5027377216 + 1373073025 = 70904^2 + 37055^2 .

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 6400450241 - 2² = 6400450237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6400450241.

It is not an unprimeable number, because it can be changed into a prime (6400450201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285845 + ... + 307421.

It is an arithmetic number, because the mean of its divisors is an integer number (847206225).

Almost surely, 2^6400450241 is an apocalyptic number.

It is an amenable number.

6400450241 is a deficient number, since it is larger than the sum of its proper divisors (377199559).

6400450241 is a wasteful number, since it uses less digits than its factorization.

6400450241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39043.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 6400450241 is about 80002.8139567603. The cubic root of 6400450241 is about 1856.6790706241.

Adding to 6400450241 its reverse (1420540046), we get a palindrome (7820990287).

It can be divided in two parts, 6400 and 450241, that multiplied together give a square (2881542400 = 53680²).

The spelling of 6400450241 in words is "six billion, four hundred million, four hundred fifty thousand, two hundred forty-one".