3887745 has 8 divisors (see below), whose sum is σ = 6220416. Its totient is φ = 2073456.

The previous prime is 3887731. The next prime is 3887749. The reversal of 3887745 is 5477883.

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

It is not a de Polignac number, because 3887745 - 2⁸ = 3887489 is a prime.

It is a super-2 number, since 2×3887745² = 30229122370050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3887697 and 3887706.

It is not an unprimeable number, because it can be changed into a prime (3887749) 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, 129577 + ... + 129606.

It is an arithmetic number, because the mean of its divisors is an integer number (777552).

Almost surely, 2^3887745 is an apocalyptic number.

It is an amenable number.

3887745 is a deficient number, since it is larger than the sum of its proper divisors (2332671).

3887745 is a wasteful number, since it uses less digits than its factorization.

3887745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259191.

The product of its digits is 188160, while the sum is 42.

The square root of 3887745 is about 1971.7365442675. The cubic root of 3887745 is about 157.2410458765.

The spelling of 3887745 in words is "three million, eight hundred eighty-seven thousand, seven hundred forty-five".