609486400 has 42 divisors (see below), whose sum is σ = 1499721410. Its totient is φ = 243793920.

The previous prime is 609486391. The next prime is 609486401. The reversal of 609486400 is 4684906.

It can be written as a sum of positive squares in 3 ways, for example, as 171505216 + 437981184 = 13096^2 + 20928^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 609486400.

It is not an unprimeable number, because it can be changed into a prime (609486401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188865 + ... + 192064.

Almost surely, 2^609486400 is an apocalyptic number.

It is an amenable number.

609486400 is an abundant number, since it is smaller than the sum of its proper divisors (890235010).

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

609486400 is a wasteful number, since it uses less digits than its factorization.

609486400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380951 (or 380936 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 609486400 is about 24687.7783528612. The cubic root of 609486400 is about 847.8545199585.

The spelling of 609486400 in words is "six hundred nine million, four hundred eighty-six thousand, four hundred".