493949871 has 12 divisors (see below), whose sum is σ = 714099672. Its totient is φ = 329015376.

The previous prime is 493949867. The next prime is 493949891. The reversal of 493949871 is 178949394.

It is not a de Polignac number, because 493949871 - 2² = 493949867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493949851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12436 + ... + 33801.

It is an arithmetic number, because the mean of its divisors is an integer number (59508306).

Almost surely, 2^493949871 is an apocalyptic number.

493949871 is a deficient number, since it is larger than the sum of its proper divisors (220149801).

493949871 is a wasteful number, since it uses less digits than its factorization.

493949871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47430 (or 47427 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 493949871 is about 22224.9830371139. The cubic root of 493949871 is about 790.4861991357.

The spelling of 493949871 in words is "four hundred ninety-three million, nine hundred forty-nine thousand, eight hundred seventy-one".