6404894324 has 12 divisors (see below), whose sum is σ = 11511499524. Its totient is φ = 3115894464.

The previous prime is 6404894323. The next prime is 6404894351. The reversal of 6404894324 is 4234984046.

It can be written as a sum of positive squares in 2 ways, for example, as 2351280100 + 4053614224 = 48490^2 + 63668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6404894323) 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, 21638009 + ... + 21638304.

It is an arithmetic number, because the mean of its divisors is an integer number (959291627).

Almost surely, 2^6404894324 is an apocalyptic number.

It is an amenable number.

6404894324 is a deficient number, since it is larger than the sum of its proper divisors (5106605200).

6404894324 is a wasteful number, since it uses less digits than its factorization.

6404894324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43276354 (or 43276352 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 44.

The square root of 6404894324 is about 80030.5836789911. The cubic root of 6404894324 is about 1857.1086928435.

The spelling of 6404894324 in words is "six billion, four hundred four million, eight hundred ninety-four thousand, three hundred twenty-four".