3888831 has 4 divisors (see below), whose sum is σ = 5185112. Its totient is φ = 2592552.

The previous prime is 3888823. The next prime is 3888847. The reversal of 3888831 is 1388883.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3888831 - 2³ = 3888823 is a prime.

It is a super-2 number, since 2×3888831² = 30246013093122, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

3888831 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3888831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3888851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648136 + ... + 648141.

It is an arithmetic number, because the mean of its divisors is an integer number (1296278).

Almost surely, 2^3888831 is an apocalyptic number.

3888831 is a deficient number, since it is larger than the sum of its proper divisors (1296281).

3888831 is a wasteful number, since it uses less digits than its factorization.

3888831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296280.

The product of its digits is 36864, while the sum is 39.

The square root of 3888831 is about 1972.0119167997. The cubic root of 3888831 is about 157.2556857151.

The spelling of 3888831 in words is "three million, eight hundred eighty-eight thousand, eight hundred thirty-one".