3993557346 has 48 divisors (see below), whose sum is σ = 9477631800. Its totient is φ = 1209675264.

The previous prime is 3993557327. The next prime is 3993557357. The reversal of 3993557346 is 6437553993.

3993557346 is a `hidden beast` number, since 39 + 9 + 35 + 573 + 4 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2847396321 + 1146161025 = 53361^2 + 33855^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3993557292 and 3993557301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 216141 + ... + 233888.

Almost surely, 2^3993557346 is an apocalyptic number.

3993557346 is an abundant number, since it is smaller than the sum of its proper divisors (5484074454).

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

3993557346 is a wasteful number, since it uses less digits than its factorization.

3993557346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450083 (or 450080 counting only the distinct ones).

The product of its digits is 9185400, while the sum is 54.

The square root of 3993557346 is about 63194.5990255496. The cubic root of 3993557346 is about 1586.5483376809.

The spelling of 3993557346 in words is "three billion, nine hundred ninety-three million, five hundred fifty-seven thousand, three hundred forty-six".