3947636732 has 12 divisors (see below), whose sum is σ = 7439777016. Its totient is φ = 1821986160.

The previous prime is 3947636729. The next prime is 3947636747. The reversal of 3947636732 is 2376367493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37957994 + ... + 37958097.

It is an arithmetic number, because the mean of its divisors is an integer number (619981418).

Almost surely, 2^3947636732 is an apocalyptic number.

It is an amenable number.

3947636732 is a deficient number, since it is larger than the sum of its proper divisors (3492140284).

3947636732 is a wasteful number, since it uses less digits than its factorization.

3947636732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75916108 (or 75916106 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 50.

The square root of 3947636732 is about 62830.2214861606. The cubic root of 3947636732 is about 1580.4438121933.

The spelling of 3947636732 in words is "three billion, nine hundred forty-seven million, six hundred thirty-six thousand, seven hundred thirty-two".