6442783403 has 32 divisors (see below), whose sum is σ = 8018486784. Its totient is φ = 5051284992.

The previous prime is 6442783379. The next prime is 6442783433. The reversal of 6442783403 is 3043872446.

It is a happy number.

It is not a de Polignac number, because 6442783403 - 2¹² = 6442779307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6442783433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670076 + ... + 679622.

It is an arithmetic number, because the mean of its divisors is an integer number (250577712).

Almost surely, 2^6442783403 is an apocalyptic number.

6442783403 is a deficient number, since it is larger than the sum of its proper divisors (1575703381).

6442783403 is a wasteful number, since it uses less digits than its factorization.

6442783403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9731.

The product of its (nonzero) digits is 387072, while the sum is 41.

The square root of 6442783403 is about 80266.9508764348. The cubic root of 6442783403 is about 1860.7634938380.

The spelling of 6442783403 in words is "six billion, four hundred forty-two million, seven hundred eighty-three thousand, four hundred three".