4083990 has 16 divisors (see below), whose sum is σ = 9801648. Its totient is φ = 1089056.

The previous prime is 4083979. The next prime is 4083997. The reversal of 4083990 is 993804.

4083990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4083997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68037 + ... + 68096.

It is an arithmetic number, because the mean of its divisors is an integer number (612603).

Almost surely, 2^4083990 is an apocalyptic number.

4083990 is an abundant number, since it is smaller than the sum of its proper divisors (5717658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4083990 is a wasteful number, since it uses less digits than its factorization.

4083990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136143.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 4083990 is about 2020.8884184932. Note that the first 3 decimals coincide. The cubic root of 4083990 is about 159.8434666999.

The spelling of 4083990 in words is "four million, eighty-three thousand, nine hundred ninety".