493920893 has 2 divisors, whose sum is σ = 493920894. Its totient is φ = 493920892.

The previous prime is 493920863. The next prime is 493920937. The reversal of 493920893 is 398029394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490091044 + 3829849 = 22138^2 + 1957^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493920893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493920863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246960446 + 246960447.

It is an arithmetic number, because the mean of its divisors is an integer number (246960447).

Almost surely, 2^493920893 is an apocalyptic number.

It is an amenable number.

493920893 is a deficient number, since it is larger than the sum of its proper divisors (1).

493920893 is an equidigital number, since it uses as much as digits as its factorization.

493920893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 493920893 is about 22224.3311035451. The cubic root of 493920893 is about 790.4707406459.

The spelling of 493920893 in words is "four hundred ninety-three million, nine hundred twenty thousand, eight hundred ninety-three".