3973831 has 8 divisors (see below), whose sum is σ = 4208000. Its totient is φ = 3742200.

The previous prime is 3973829. The next prime is 3973847. The reversal of 3973831 is 1383793.

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

It is a cyclic number.

It is not a de Polignac number, because 3973831 - 2¹ = 3973829 is a prime.

It is a super-3 number, since 3×3973831³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an Ulam number.

It is a Duffinian number.

3973831 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3973811) 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, 3256 + ... + 4306.

It is an arithmetic number, because the mean of its divisors is an integer number (526000).

Almost surely, 2^3973831 is an apocalyptic number.

3973831 is a deficient number, since it is larger than the sum of its proper divisors (234169).

3973831 is a wasteful number, since it uses less digits than its factorization.

3973831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its digits is 13608, while the sum is 34.

The square root of 3973831 is about 1993.4470145956. The cubic root of 3973831 is about 158.3931750409.

The spelling of 3973831 in words is "three million, nine hundred seventy-three thousand, eight hundred thirty-one".