3893449928 has 16 divisors (see below), whose sum is σ = 7419895260. Its totient is φ = 1914811200.

The previous prime is 3893449927. The next prime is 3893449969. The reversal of 3893449928 is 8299443983.

It can be written as a sum of positive squares in 2 ways, for example, as 3373518724 + 519931204 = 58082^2 + 22802^2 .

It is not an unprimeable number, because it can be changed into a prime (3893449927) 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, 3988703 + ... + 3989678.

Almost surely, 2^3893449928 is an apocalyptic number.

It is an amenable number.

3893449928 is a deficient number, since it is larger than the sum of its proper divisors (3526445332).

3893449928 is a wasteful number, since it uses less digits than its factorization.

3893449928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7978448 (or 7978444 counting only the distinct ones).

The product of its digits is 13436928, while the sum is 59.

The square root of 3893449928 is about 62397.5153992529. The cubic root of 3893449928 is about 1573.1792081060.

The spelling of 3893449928 in words is "three billion, eight hundred ninety-three million, four hundred forty-nine thousand, nine hundred twenty-eight".