6446004769 has 4 divisors (see below), whose sum is σ = 6453019840. Its totient is φ = 6438989700.

The previous prime is 6446004757. The next prime is 6446004793. The reversal of 6446004769 is 9674006446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6446004769 - 2⁷ = 6446004641 is a prime.

It is a super-2 number, since 2×6446004769² = 83101954963941486722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6446002769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3506157 + ... + 3507994.

It is an arithmetic number, because the mean of its divisors is an integer number (1613254960).

Almost surely, 2^6446004769 is an apocalyptic number.

It is an amenable number.

6446004769 is a deficient number, since it is larger than the sum of its proper divisors (7015071).

6446004769 is an equidigital number, since it uses as much as digits as its factorization.

6446004769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7015070.

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 6446004769 is about 80287.0149463785. The cubic root of 6446004769 is about 1861.0735669399.

The spelling of 6446004769 in words is "six billion, four hundred forty-six million, four thousand, seven hundred sixty-nine".