4939990 has 16 divisors (see below), whose sum is σ = 9700560. Its totient is φ = 1796320.

The previous prime is 4939973. The next prime is 4939993. The reversal of 4939990 is 999394.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4939993) 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, 22345 + ... + 22564.

It is an arithmetic number, because the mean of its divisors is an integer number (606285).

Almost surely, 2^4939990 is an apocalyptic number.

4939990 is a deficient number, since it is larger than the sum of its proper divisors (4760570).

4939990 is a wasteful number, since it uses less digits than its factorization.

4939990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44927.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 4939990 is about 2222.6088274818. The cubic root of 4939990 is about 170.3107350208.

It can be divided in two parts, 4939 and 990, that added together give a square (5929 = 77²).

The spelling of 4939990 in words is "four million, nine hundred thirty-nine thousand, nine hundred ninety".