4089491990 has 8 divisors (see below), whose sum is σ = 7361085600. Its totient is φ = 1635796792.

The previous prime is 4089491983. The next prime is 4089492041. The reversal of 4089491990 is 991949804.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204474590 + ... + 204474609.

It is an arithmetic number, because the mean of its divisors is an integer number (920135700).

Almost surely, 2^4089491990 is an apocalyptic number.

4089491990 is a deficient number, since it is larger than the sum of its proper divisors (3271593610).

4089491990 is a wasteful number, since it uses less digits than its factorization.

4089491990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408949206.

The product of its (nonzero) digits is 839808, while the sum is 53.

The square root of 4089491990 is about 63949.1359597610. The cubic root of 4089491990 is about 1599.1521536668.

The spelling of 4089491990 in words is "four billion, eighty-nine million, four hundred ninety-one thousand, nine hundred ninety".