609538944 has 128 divisors (see below), whose sum is σ = 1959379200. Its totient is φ = 163897344.

The previous prime is 609538933. The next prime is 609538949. The reversal of 609538944 is 449835906.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 609538893 and 609538902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609538949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39027 + ... + 52365.

It is an arithmetic number, because the mean of its divisors is an integer number (15307650).

Almost surely, 2^609538944 is an apocalyptic number.

609538944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609538944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (979689600).

609538944 is an abundant number, since it is smaller than the sum of its proper divisors (1349840256).

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

609538944 is a wasteful number, since it uses less digits than its factorization.

609538944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13380 (or 13368 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 609538944 is about 24688.8425002064. The cubic root of 609538944 is about 847.8788838534.

The spelling of 609538944 in words is "six hundred nine million, five hundred thirty-eight thousand, nine hundred forty-four".