609490779 has 8 divisors (see below), whose sum is σ = 821785680. Its totient is φ = 401761536.

The previous prime is 609490769. The next prime is 609490781. The reversal of 609490779 is 977094906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 609490779 - 2⁵ = 609490747 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (609490769) 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, 1141102 + ... + 1141635.

It is an arithmetic number, because the mean of its divisors is an integer number (102723210).

Almost surely, 2^609490779 is an apocalyptic number.

609490779 is a deficient number, since it is larger than the sum of its proper divisors (212294901).

609490779 is a wasteful number, since it uses less digits than its factorization.

609490779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2282829.

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 609490779 is about 24687.8670403095. The cubic root of 609490779 is about 847.8565504911.

The spelling of 609490779 in words is "six hundred nine million, four hundred ninety thousand, seven hundred seventy-nine".