3866640488 has 8 divisors (see below), whose sum is σ = 7249950930. Its totient is φ = 1933320240.

The previous prime is 3866640473. The next prime is 3866640527. The reversal of 3866640488 is 8840466683.

It can be written as a sum of positive squares in only one way, i.e., 2609370724 + 1257269764 = 51082^2 + 35458^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 241665023 + ... + 241665038.

Almost surely, 2^3866640488 is an apocalyptic number.

It is an amenable number.

3866640488 is a deficient number, since it is larger than the sum of its proper divisors (3383310442).

3866640488 is a wasteful number, since it uses less digits than its factorization.

3866640488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483330067 (or 483330063 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 53.

The square root of 3866640488 is about 62182.3165216607. The cubic root of 3866640488 is about 1569.5600330461.

The spelling of 3866640488 in words is "three billion, eight hundred sixty-six million, six hundred forty thousand, four hundred eighty-eight".