493908973 has 8 divisors (see below), whose sum is σ = 525211128. Its totient is φ = 462856704.

The previous prime is 493908953. The next prime is 493908977. The reversal of 493908973 is 379809394.

It can be written as a sum of positive squares in 4 ways, for example, as 25532809 + 468376164 = 5053^2 + 21642^2 .

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 493908973 - 2⁵ = 493908941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493908973.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493908977) 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, 58386 + ... + 66307.

It is an arithmetic number, because the mean of its divisors is an integer number (65651391).

Almost surely, 2^493908973 is an apocalyptic number.

It is an amenable number.

493908973 is a deficient number, since it is larger than the sum of its proper divisors (31302155).

493908973 is a wasteful number, since it uses less digits than its factorization.

493908973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124943.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 493908973 is about 22224.0629273767. The cubic root of 493908973 is about 790.4643816742.

The spelling of 493908973 in words is "four hundred ninety-three million, nine hundred eight thousand, nine hundred seventy-three".