609459988 has 12 divisors (see below), whose sum is σ = 1066754080. Its totient is φ = 304673112.

The previous prime is 609459973. The next prime is 609459989. The reversal of 609459988 is 889954906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609459989) 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, 17995 + ... + 39277.

Almost surely, 2^609459988 is an apocalyptic number.

It is an amenable number.

609459988 is a deficient number, since it is larger than the sum of its proper divisors (457294092).

609459988 is a wasteful number, since it uses less digits than its factorization.

609459988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28446 (or 28444 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 58.

The square root of 609459988 is about 24687.2434265148. The cubic root of 609459988 is about 847.8422725662.

The spelling of 609459988 in words is "six hundred nine million, four hundred fifty-nine thousand, nine hundred eighty-eight".