3936831 has 4 divisors (see below), whose sum is σ = 5249112. Its totient is φ = 2624552.

The previous prime is 3936827. The next prime is 3936833. The reversal of 3936831 is 1386393.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1386393 = 3 ⋅462131.

It is a cyclic number.

It is not a de Polignac number, because 3936831 - 2² = 3936827 is a prime.

It is a super-2 number, since 2×3936831² = 30997276645122, which contains 22 as substring.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 3936792 and 3936801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3936833) 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, 656136 + ... + 656141.

It is an arithmetic number, because the mean of its divisors is an integer number (1312278).

Almost surely, 2^3936831 is an apocalyptic number.

3936831 is a deficient number, since it is larger than the sum of its proper divisors (1312281).

3936831 is a wasteful number, since it uses less digits than its factorization.

3936831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312280.

The product of its digits is 11664, while the sum is 33.

The square root of 3936831 is about 1984.1449039826. The cubic root of 3936831 is about 157.9000462718.

The spelling of 3936831 in words is "three million, nine hundred thirty-six thousand, eight hundred thirty-one".