3995831 has 8 divisors (see below), whose sum is σ = 4609440. Its totient is φ = 3392928.

The previous prime is 3995791. The next prime is 3995837. The reversal of 3995831 is 1385993.

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

It is not a de Polignac number, because 3995831 - 2¹⁸ = 3733687 is a prime.

It is a super-2 number, since 2×3995831² = 31933330761122, 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 (3995837) 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, 1856 + ... + 3381.

It is an arithmetic number, because the mean of its divisors is an integer number (576180).

Almost surely, 2^3995831 is an apocalyptic number.

3995831 is a deficient number, since it is larger than the sum of its proper divisors (613609).

3995831 is a wasteful number, since it uses less digits than its factorization.

3995831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5353.

The product of its digits is 29160, while the sum is 38.

The square root of 3995831 is about 1998.9574782871. The cubic root of 3995831 is about 158.6849370678.

The spelling of 3995831 in words is "three million, nine hundred ninety-five thousand, eight hundred thirty-one".