609969907 has 4 divisors (see below), whose sum is σ = 620308440. Its totient is φ = 599631376.

The previous prime is 609969839. The next prime is 609969917. The reversal of 609969907 is 709969906.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709969906 = 2 ⋅354984953.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609969907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609969917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5169178 + ... + 5169295.

It is an arithmetic number, because the mean of its divisors is an integer number (155077110).

Almost surely, 2^609969907 is an apocalyptic number.

609969907 is a deficient number, since it is larger than the sum of its proper divisors (10338533).

609969907 is a wasteful number, since it uses less digits than its factorization.

609969907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10338532.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The square root of 609969907 is about 24697.5688479656. The cubic root of 609969907 is about 848.0786623622.

Subtracting 609969907 from its reverse (709969906), we obtain a palindrome (99999999).

The spelling of 609969907 in words is "six hundred nine million, nine hundred sixty-nine thousand, nine hundred seven".