494501993 has 8 divisors (see below), whose sum is σ = 505377408. Its totient is φ = 483641424.

The previous prime is 494501983. The next prime is 494502011. The reversal of 494501993 is 399105494.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 494501993 - 2⁴ = 494501977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (494501983) 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, 88130 + ... + 93572.

It is an arithmetic number, because the mean of its divisors is an integer number (63172176).

Almost surely, 2^494501993 is an apocalyptic number.

It is an amenable number.

494501993 is a deficient number, since it is larger than the sum of its proper divisors (10875415).

494501993 is a wasteful number, since it uses less digits than its factorization.

494501993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7423.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 494501993 is about 22237.4007698742. The cubic root of 494501993 is about 790.7806165337.

The spelling of 494501993 in words is "four hundred ninety-four million, five hundred one thousand, nine hundred ninety-three".