493857439 has 2 divisors, whose sum is σ = 493857440. Its totient is φ = 493857438.

The previous prime is 493857433. The next prime is 493857461. The reversal of 493857439 is 934758394.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 493857439 - 2²³ = 485468831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (493857433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246928719 + 246928720.

It is an arithmetic number, because the mean of its divisors is an integer number (246928720).

Almost surely, 2^493857439 is an apocalyptic number.

493857439 is a deficient number, since it is larger than the sum of its proper divisors (1).

493857439 is an equidigital number, since it uses as much as digits as its factorization.

493857439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 52.

The square root of 493857439 is about 22222.9034781686. The cubic root of 493857439 is about 790.4368886133.

The spelling of 493857439 in words is "four hundred ninety-three million, eight hundred fifty-seven thousand, four hundred thirty-nine".