6445445396 has 24 divisors (see below), whose sum is σ = 12155587584. Its totient is φ = 2972763360.

The previous prime is 6445445393. The next prime is 6445445423. The reversal of 6445445396 is 6935445446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6445445393) 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, 34361 + ... + 118623.

It is an arithmetic number, because the mean of its divisors is an integer number (506482816).

Almost surely, 2^6445445396 is an apocalyptic number.

It is an amenable number.

6445445396 is a deficient number, since it is larger than the sum of its proper divisors (5710142188).

6445445396 is a wasteful number, since it uses less digits than its factorization.

6445445396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85751 (or 85749 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 50.

The square root of 6445445396 is about 80283.5312875561. The cubic root of 6445445396 is about 1861.0197318149.

Adding to 6445445396 its sum of digits (50), we get a palindrome (6445445446).

The spelling of 6445445396 in words is "six billion, four hundred forty-five million, four hundred forty-five thousand, three hundred ninety-six".