494694609 has 4 divisors (see below), whose sum is σ = 659592816. Its totient is φ = 329796404.

The previous prime is 494694589. The next prime is 494694619. The reversal of 494694609 is 906496494.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 494694609 - 2⁷ = 494694481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494694619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82449099 + ... + 82449104.

It is an arithmetic number, because the mean of its divisors is an integer number (164898204).

Almost surely, 2^494694609 is an apocalyptic number.

It is an amenable number.

494694609 is a deficient number, since it is larger than the sum of its proper divisors (164898207).

494694609 is a wasteful number, since it uses less digits than its factorization.

494694609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164898206.

The product of its (nonzero) digits is 1679616, while the sum is 51.

The square root of 494694609 is about 22241.7312500623. The cubic root of 494694609 is about 790.8832768728.

The spelling of 494694609 in words is "four hundred ninety-four million, six hundred ninety-four thousand, six hundred nine".