609401376 has 144 divisors (see below), whose sum is σ = 1821403584. Its totient is φ = 192901632.

The previous prime is 609401371. The next prime is 609401393. The reversal of 609401376 is 673104906.

609401376 is a `hidden beast` number, since 609 + 40 + 1 + 3 + 7 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 609401376.

It is not an unprimeable number, because it can be changed into a prime (609401371) 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 23 ways as a sum of consecutive naturals, for example, 1304695 + ... + 1305161.

It is an arithmetic number, because the mean of its divisors is an integer number (12648636).

Almost surely, 2^609401376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609401376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910701792).

609401376 is an abundant number, since it is smaller than the sum of its proper divisors (1212002208).

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

609401376 is a wasteful number, since it uses less digits than its factorization.

609401376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 609401376 is about 24686.0563071544. The cubic root of 609401376 is about 847.8150925898.

The spelling of 609401376 in words is "six hundred nine million, four hundred one thousand, three hundred seventy-six".