6449779446 has 16 divisors (see below), whose sum is σ = 14072246208. Its totient is φ = 1954478600.

The previous prime is 6449779433. The next prime is 6449779499.

6449779446 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 6449779446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48861900 + ... + 48862031.

It is an arithmetic number, because the mean of its divisors is an integer number (879515388).

Almost surely, 2^6449779446 is an apocalyptic number.

6449779446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

6449779446 is an abundant number, since it is smaller than the sum of its proper divisors (7622466762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6449779446 is a wasteful number, since it uses less digits than its factorization.

6449779446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97723947.

The product of its digits is 36578304, while the sum is 60.

The square root of 6449779446 is about 80310.5189000793. The cubic root of 6449779446 is about 1861.4367676642.

The spelling of 6449779446 in words is "six billion, four hundred forty-nine million, seven hundred seventy-nine thousand, four hundred forty-six".