609601409947 has 4 divisors (see below), whose sum is σ = 609620278680. Its totient is φ = 609582541216.

The previous prime is 609601409909. The next prime is 609601409953. The reversal of 609601409947 is 749904106906.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749904106906 = 2 ⋅374952053453.

It is a cyclic number.

It is not a de Polignac number, because 609601409947 - 2⁷ = 609601409819 is a prime.

It is a super-2 number, since 2×609601409947² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609601409987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9385822 + ... + 9450547.

It is an arithmetic number, because the mean of its divisors is an integer number (152405069670).

Almost surely, 2^609601409947 is an apocalyptic number.

609601409947 is a deficient number, since it is larger than the sum of its proper divisors (18868733).

609601409947 is a wasteful number, since it uses less digits than its factorization.

609601409947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18868732.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 609601409947 in words is "six hundred nine billion, six hundred one million, four hundred nine thousand, nine hundred forty-seven".