4090631 has 4 divisors (see below), whose sum is σ = 4120200. Its totient is φ = 4061064.

The previous prime is 4090589. The next prime is 4090637. The reversal of 4090631 is 1360904.

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 4090631 - 2¹⁴ = 4074247 is a prime.

It is a super-2 number, since 2×4090631² = 33466523956322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4090597 and 4090606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4090637) 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, 14576 + ... + 14853.

It is an arithmetic number, because the mean of its divisors is an integer number (1030050).

Almost surely, 2^4090631 is an apocalyptic number.

4090631 is a deficient number, since it is larger than the sum of its proper divisors (29569).

4090631 is a wasteful number, since it uses less digits than its factorization.

4090631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29568.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 4090631 is about 2022.5308403087. The cubic root of 4090631 is about 159.9300605783.

The spelling of 4090631 in words is "four million, ninety thousand, six hundred thirty-one".