3947304628 has 12 divisors (see below), whose sum is σ = 6913322500. Its totient is φ = 1972069632.

The previous prime is 3947304607. The next prime is 3947304629. The reversal of 3947304628 is 8264037493.

It can be written as a sum of positive squares in 2 ways, for example, as 2857116304 + 1090188324 = 53452^2 + 33018^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947304629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390051 + ... + 400042.

Almost surely, 2^3947304628 is an apocalyptic number.

It is an amenable number.

3947304628 is a deficient number, since it is larger than the sum of its proper divisors (2966017872).

3947304628 is a wasteful number, since it uses less digits than its factorization.

3947304628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791346 (or 791344 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 3947304628 is about 62827.5785622843. The cubic root of 3947304628 is about 1580.3994914628.

The spelling of 3947304628 in words is "three billion, nine hundred forty-seven million, three hundred four thousand, six hundred twenty-eight".