3887799665 has 8 divisors (see below), whose sum is σ = 4910904960. Its totient is φ = 2946542832.

The previous prime is 3887799659. The next prime is 3887799667. The reversal of 3887799665 is 5669977883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3887799665 - 2¹⁰ = 3887798641 is a prime.

It is a super-2 number, since 2×3887799665² = 30229972470348224450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3887799595 and 3887799604.

It is not an unprimeable number, because it can be changed into a prime (3887799667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20462009 + ... + 20462198.

It is an arithmetic number, because the mean of its divisors is an integer number (613863120).

Almost surely, 2^3887799665 is an apocalyptic number.

It is an amenable number.

3887799665 is a deficient number, since it is larger than the sum of its proper divisors (1023105295).

3887799665 is a wasteful number, since it uses less digits than its factorization.

3887799665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40924231.

The product of its digits is 137168640, while the sum is 68.

The square root of 3887799665 is about 62352.2226147553. Note that the first 3 decimals coincide. The cubic root of 3887799665 is about 1572.4178285395.

The spelling of 3887799665 in words is "three billion, eight hundred eighty-seven million, seven hundred ninety-nine thousand, six hundred sixty-five".