6446226447 has 24 divisors (see below), whose sum is σ = 9881805024. Its totient is φ = 4035308544.

The previous prime is 6446226439. The next prime is 6446226499. The reversal of 6446226447 is 7446226446.

It is not a de Polignac number, because 6446226447 - 2³ = 6446226439 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446226407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17598 + ... + 114900.

It is an arithmetic number, because the mean of its divisors is an integer number (411741876).

Almost surely, 2^6446226447 is an apocalyptic number.

6446226447 is a deficient number, since it is larger than the sum of its proper divisors (3435578577).

6446226447 is a wasteful number, since it uses less digits than its factorization.

6446226447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97759 (or 97756 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 45.

The square root of 6446226447 is about 80288.3954690838. The cubic root of 6446226447 is about 1861.0949007920.

Subtracting 6446226447 from its reverse (7446226446), we obtain a palindrome (999999999).

It can be divided in two parts, 64462 and 26447, that added together give a palindrome (90909).

The spelling of 6446226447 in words is "six billion, four hundred forty-six million, two hundred twenty-six thousand, four hundred forty-seven".