3994385252 has 48 divisors (see below), whose sum is σ = 8569314432. Its totient is φ = 1603092480.

The previous prime is 3994385243. The next prime is 3994385261. The reversal of 3994385252 is 2525834993.

It is an interprime number because it is at equal distance from previous prime (3994385243) and next prime (3994385261).

It is a super-2 number, since 2×3994385252² = 31910227082790207008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3994385252.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138653 + ... + 164964.

It is an arithmetic number, because the mean of its divisors is an integer number (178527384).

Almost surely, 2^3994385252 is an apocalyptic number.

It is an amenable number.

3994385252 is an abundant number, since it is smaller than the sum of its proper divisors (4574929180).

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

3994385252 is a wasteful number, since it uses less digits than its factorization.

3994385252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303668 (or 303666 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 50.

The square root of 3994385252 is about 63201.1491351225. The cubic root of 3994385252 is about 1586.6579660995.

The spelling of 3994385252 in words is "three billion, nine hundred ninety-four million, three hundred eighty-five thousand, two hundred fifty-two".