609143890 has 8 divisors (see below), whose sum is σ = 1096459020. Its totient is φ = 243657552.

The previous prime is 609143879. The next prime is 609143903. The reversal of 609143890 is 98341906.

It can be written as a sum of positive squares in 2 ways, for example, as 575376169 + 33767721 = 23987^2 + 5811^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30457185 + ... + 30457204.

Almost surely, 2^609143890 is an apocalyptic number.

609143890 is a deficient number, since it is larger than the sum of its proper divisors (487315130).

609143890 is a wasteful number, since it uses less digits than its factorization.

609143890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60914396.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 609143890 is about 24680.8405448437. The cubic root of 609143890 is about 847.6956686882.

The spelling of 609143890 in words is "six hundred nine million, one hundred forty-three thousand, eight hundred ninety".