4223990 has 16 divisors (see below), whose sum is σ = 8050752. Its totient is φ = 1590144.

The previous prime is 4223983. The next prime is 4223993. The reversal of 4223990 is 993224.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223993) 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, 12254 + ... + 12593.

It is an arithmetic number, because the mean of its divisors is an integer number (503172).

Almost surely, 2^4223990 is an apocalyptic number.

4223990 is a deficient number, since it is larger than the sum of its proper divisors (3826762).

4223990 is a wasteful number, since it uses less digits than its factorization.

4223990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24871.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 4223990 is about 2055.2347797758. The cubic root of 4223990 is about 161.6494732604.

The spelling of 4223990 in words is "four million, two hundred twenty-three thousand, nine hundred ninety".