4090985 has 8 divisors (see below), whose sum is σ = 5167680. Its totient is φ = 3100464.

The previous prime is 4090973. The next prime is 4090991. The reversal of 4090985 is 5890904.

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 4090985 - 2⁴ = 4090969 is a prime.

It is a plaindrome in base 11.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 21437 + ... + 21626.

It is an arithmetic number, because the mean of its divisors is an integer number (645960).

Almost surely, 2^4090985 is an apocalyptic number.

It is an amenable number.

4090985 is a deficient number, since it is larger than the sum of its proper divisors (1076695).

4090985 is a wasteful number, since it uses less digits than its factorization.

4090985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43087.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 4090985 is about 2022.6183525322. The cubic root of 4090985 is about 159.9346738526.

The spelling of 4090985 in words is "four million, ninety thousand, nine hundred eighty-five".