4990555 has 4 divisors (see below), whose sum is σ = 5988672. Its totient is φ = 3992440.

The previous prime is 4990547. The next prime is 4990567. The reversal of 4990555 is 5550994.

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

It is not a de Polignac number, because 4990555 - 2³ = 4990547 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 499051 + ... + 499060.

It is an arithmetic number, because the mean of its divisors is an integer number (1497168).

Almost surely, 2^4990555 is an apocalyptic number.

4990555 is a deficient number, since it is larger than the sum of its proper divisors (998117).

4990555 is an equidigital number, since it uses as much as digits as its factorization.

4990555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998116.

The product of its (nonzero) digits is 40500, while the sum is 37.

The square root of 4990555 is about 2233.9550129759. The cubic root of 4990555 is about 170.8898553138.

The spelling of 4990555 in words is "four million, nine hundred ninety thousand, five hundred fifty-five".