609488840 has 32 divisors (see below), whose sum is σ = 1443528000. Its totient is φ = 230963904.

The previous prime is 609488839. The next prime is 609488849. The reversal of 609488840 is 48884906.

It is not an unprimeable number, because it can be changed into a prime (609488849) 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, 400220 + ... + 401739.

It is an arithmetic number, because the mean of its divisors is an integer number (45110250).

Almost surely, 2^609488840 is an apocalyptic number.

It is an amenable number.

609488840 is an abundant number, since it is smaller than the sum of its proper divisors (834039160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609488840 is a wasteful number, since it uses less digits than its factorization.

609488840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801989 (or 801985 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 609488840 is about 24687.8277699760. The cubic root of 609488840 is about 847.8556513823.

The spelling of 609488840 in words is "six hundred nine million, four hundred eighty-eight thousand, eight hundred forty".