4090055 has 4 divisors (see below), whose sum is σ = 4908072. Its totient is φ = 3272040.

The previous prime is 4090049. The next prime is 4090061. The reversal of 4090055 is 5500904.

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

It is an interprime number because it is at equal distance from previous prime (4090049) and next prime (4090061).

It is a de Polignac number, because none of the positive numbers 2^k-4090055 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4090055.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 409001 + ... + 409010.

It is an arithmetic number, because the mean of its divisors is an integer number (1227018).

Almost surely, 2^4090055 is an apocalyptic number.

4090055 is a deficient number, since it is larger than the sum of its proper divisors (818017).

4090055 is an equidigital number, since it uses as much as digits as its factorization.

4090055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818016.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 4090055 is about 2022.3884394448. The cubic root of 4090055 is about 159.9225536648.

Adding to 4090055 its reverse (5500904), we get a palindrome (9590959).

The spelling of 4090055 in words is "four million, ninety thousand, fifty-five".