4990090 has 16 divisors (see below), whose sum is σ = 10265472. Its totient is φ = 1710864.

The previous prime is 4990067. The next prime is 4990091. The reversal of 4990090 is 900994.

It is not an unprimeable number, because it can be changed into a prime (4990091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35574 + ... + 35713.

It is an arithmetic number, because the mean of its divisors is an integer number (641592).

Almost surely, 2^4990090 is an apocalyptic number.

4990090 is an abundant number, since it is smaller than the sum of its proper divisors (5275382).

4990090 is a wasteful number, since it uses less digits than its factorization.

4990090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71301.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 4990090 is about 2233.8509350447. The cubic root of 4990090 is about 170.8845475374.

The spelling of 4990090 in words is "four million, nine hundred ninety thousand, ninety".