3887447557 has 16 divisors (see below), whose sum is σ = 4879964160. Its totient is φ = 3019473072.

The previous prime is 3887447533. The next prime is 3887447561. The reversal of 3887447557 is 7557447883.

It is not a de Polignac number, because 3887447557 - 2⁷ = 3887447429 is a prime.

It is a super-2 number, since 2×3887447557² = 30224497016850536498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3887442557) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 632353 + ... + 638470.

It is an arithmetic number, because the mean of its divisors is an integer number (304997760).

Almost surely, 2^3887447557 is an apocalyptic number.

It is an amenable number.

3887447557 is a deficient number, since it is larger than the sum of its proper divisors (992516603).

3887447557 is a wasteful number, since it uses less digits than its factorization.

3887447557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270872.

The product of its digits is 26342400, while the sum is 58.

The square root of 3887447557 is about 62349.3990107363. The cubic root of 3887447557 is about 1572.3703571624.

The spelling of 3887447557 in words is "three billion, eight hundred eighty-seven million, four hundred forty-seven thousand, five hundred fifty-seven".