4189090 has 8 divisors (see below), whose sum is σ = 7540380. Its totient is φ = 1675632.

The previous prime is 4189069. The next prime is 4189091. The reversal of 4189090 is 909814.

It can be written as a sum of positive squares in 2 ways, for example, as 4165681 + 23409 = 2041^2 + 153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (4189091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209445 + ... + 209464.

Almost surely, 2^4189090 is an apocalyptic number.

4189090 is a deficient number, since it is larger than the sum of its proper divisors (3351290).

4189090 is a wasteful number, since it uses less digits than its factorization.

4189090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418916.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 4189090 is about 2046.7266549298. The cubic root of 4189090 is about 161.2030410303.

The spelling of 4189090 in words is "four million, one hundred eighty-nine thousand, ninety".