494908961 has 4 divisors (see below), whose sum is σ = 498687024. Its totient is φ = 491130900.

The previous prime is 494908951. The next prime is 494909021. The reversal of 494908961 is 169809494.

It is a happy number.

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 494908961 - 2¹⁰ = 494907937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494908901) 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, 1888835 + ... + 1889096.

It is an arithmetic number, because the mean of its divisors is an integer number (124671756).

Almost surely, 2^494908961 is an apocalyptic number.

It is an amenable number.

494908961 is a deficient number, since it is larger than the sum of its proper divisors (3778063).

494908961 is a wasteful number, since it uses less digits than its factorization.

494908961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3778062.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 494908961 is about 22246.5494178311. The cubic root of 494908961 is about 790.9974907261.

The spelling of 494908961 in words is "four hundred ninety-four million, nine hundred eight thousand, nine hundred sixty-one".