3888785 has 8 divisors (see below), whose sum is σ = 4693416. Its totient is φ = 3093120.

The previous prime is 3888763. The next prime is 3888823. The reversal of 3888785 is 5878883.

It is a Cunningham number, because it is equal to 1972²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 3888784 = 1^2 + 1972^2 .

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

It is not a de Polignac number, because 3888785 - 2⁶ = 3888721 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 3¹³ + 8³ + 8³ + 8³ + 7⁶ + 8⁷ + 5⁷ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1244 + ... + 3053.

It is an arithmetic number, because the mean of its divisors is an integer number (586677).

Almost surely, 2^3888785 is an apocalyptic number.

It is an amenable number.

3888785 is a deficient number, since it is larger than the sum of its proper divisors (804631).

3888785 is a wasteful number, since it uses less digits than its factorization.

3888785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483.

The product of its digits is 430080, while the sum is 47.

The square root of 3888785 is about 1972.0002535497. Note that the first 3 decimals coincide. The cubic root of 3888785 is about 157.2550656667.

It can be divided in two parts, 388878 and 5, that added together give a palindrome (388883).

The spelling of 3888785 in words is "three million, eight hundred eighty-eight thousand, seven hundred eighty-five".