493622921 has 8 divisors (see below), whose sum is σ = 539781888. Its totient is φ = 447678000.

The previous prime is 493622917. The next prime is 493622933. The reversal of 493622921 is 129226394.

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 493622921 - 2² = 493622917 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 (493622911) 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, 48665 + ... + 57926.

It is an arithmetic number, because the mean of its divisors is an integer number (67472736).

Almost surely, 2^493622921 is an apocalyptic number.

It is an amenable number.

493622921 is a deficient number, since it is larger than the sum of its proper divisors (46158967).

493622921 is a wasteful number, since it uses less digits than its factorization.

493622921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107023.

The product of its digits is 46656, while the sum is 38.

The square root of 493622921 is about 22217.6263583669. The cubic root of 493622921 is about 790.3117505918.

The spelling of 493622921 in words is "four hundred ninety-three million, six hundred twenty-two thousand, nine hundred twenty-one".