4999990 has 24 divisors (see below), whose sum is σ = 9364032. Its totient is φ = 1920240.

The previous prime is 4999963. The next prime is 4999999. The reversal of 4999990 is 999994.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999999) 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 11 ways as a sum of consecutive naturals, for example, 39307 + ... + 39433.

It is an arithmetic number, because the mean of its divisors is an integer number (390168).

Almost surely, 2^4999990 is an apocalyptic number.

4999990 is a deficient number, since it is larger than the sum of its proper divisors (4364042).

4999990 is a wasteful number, since it uses less digits than its factorization.

4999990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 4999990 is about 2236.0657414307. The cubic root of 4999990 is about 170.9974806692.

The spelling of 4999990 in words is "four million, nine hundred ninety-nine thousand, nine hundred ninety".