6463444431 has 8 divisors (see below), whose sum is σ = 8624606464. Its totient is φ = 4305622680.

The previous prime is 6463444411. The next prime is 6463444433. The reversal of 6463444431 is 1344443646.

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

It is not a de Polignac number, because 6463444431 - 2⁶ = 6463444367 is a prime.

It is a super-2 number, since 2×6463444431² = 83552227825249827522, which contains 22 as substring.

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 6463444431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6463444433) 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, 830551 + ... + 838296.

It is an arithmetic number, because the mean of its divisors is an integer number (1078075808).

Almost surely, 2^6463444431 is an apocalyptic number.

6463444431 is a deficient number, since it is larger than the sum of its proper divisors (2161162033).

6463444431 is a wasteful number, since it uses less digits than its factorization.

6463444431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670141.

The product of its digits is 331776, while the sum is 39.

The square root of 6463444431 is about 80395.5498208701. The cubic root of 6463444431 is about 1862.7504333970.

The spelling of 6463444431 in words is "six billion, four hundred sixty-three million, four hundred forty-four thousand, four hundred thirty-one".