494122409 has 8 divisors (see below), whose sum is σ = 562479552. Its totient is φ = 429671440.

The previous prime is 494122403. The next prime is 494122411. The reversal of 494122409 is 904221494.

It is a happy number.

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

It is not a de Polignac number, because 494122409 - 2²⁸ = 225686953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494122403) 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, 976274 + ... + 976779.

It is an arithmetic number, because the mean of its divisors is an integer number (70309944).

Almost surely, 2^494122409 is an apocalyptic number.

It is an amenable number.

494122409 is a deficient number, since it is larger than the sum of its proper divisors (68357143).

494122409 is a wasteful number, since it uses less digits than its factorization.

494122409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953087.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 494122409 is about 22228.8643209679. The cubic root of 494122409 is about 790.5782280632.

The spelling of 494122409 in words is "four hundred ninety-four million, one hundred twenty-two thousand, four hundred nine".