609449388 has 24 divisors (see below), whose sum is σ = 1505698992. Its totient is φ = 191199744.

The previous prime is 609449369. The next prime is 609449419. The reversal of 609449388 is 883944906.

It is a happy number.

609449388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 609449388.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493545 + ... + 1493952.

It is an arithmetic number, because the mean of its divisors is an integer number (62737458).

Almost surely, 2^609449388 is an apocalyptic number.

609449388 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

609449388 is an abundant number, since it is smaller than the sum of its proper divisors (896249604).

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

609449388 is a wasteful number, since it uses less digits than its factorization.

609449388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2987521 (or 2987519 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The square root of 609449388 is about 24687.0287398058. The cubic root of 609449388 is about 847.8373571874.

The spelling of 609449388 in words is "six hundred nine million, four hundred forty-nine thousand, three hundred eighty-eight".