4086931 has 4 divisors (see below), whose sum is σ = 4094272. Its totient is φ = 4079592.

The previous prime is 4086923. The next prime is 4086949. The reversal of 4086931 is 1396804.

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

It is a cyclic number.

It is not a de Polignac number, because 4086931 - 2³ = 4086923 is a prime.

It is a super-2 number, since 2×4086931² = 33406009997522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4086893 and 4086902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4086911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760 + ... + 3973.

It is an arithmetic number, because the mean of its divisors is an integer number (1023568).

Almost surely, 2^4086931 is an apocalyptic number.

4086931 is a deficient number, since it is larger than the sum of its proper divisors (7341).

4086931 is an equidigital number, since it uses as much as digits as its factorization.

4086931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7340.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4086931 is about 2021.6159378082. The cubic root of 4086931 is about 159.8818268033.

The spelling of 4086931 in words is "four million, eighty-six thousand, nine hundred thirty-one".