493858457 has 2 divisors, whose sum is σ = 493858458. Its totient is φ = 493858456.

The previous prime is 493858447. The next prime is 493858493. The reversal of 493858457 is 754858394.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427207561 + 66650896 = 20669^2 + 8164^2 .

It is a cyclic number.

It is not a de Polignac number, because 493858457 - 2¹⁰ = 493857433 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 493858399 and 493858408.

It is not a weakly prime, because it can be changed into another prime (493858447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246929228 + 246929229.

It is an arithmetic number, because the mean of its divisors is an integer number (246929229).

Almost surely, 2^493858457 is an apocalyptic number.

It is an amenable number.

493858457 is a deficient number, since it is larger than the sum of its proper divisors (1).

493858457 is an equidigital number, since it uses as much as digits as its factorization.

493858457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4838400, while the sum is 53.

The square root of 493858457 is about 22222.9263824547. The cubic root of 493858457 is about 790.4374317284.

The spelling of 493858457 in words is "four hundred ninety-three million, eight hundred fifty-eight thousand, four hundred fifty-seven".