493987849 has 4 divisors (see below), whose sum is σ = 496470400. Its totient is φ = 491505300.

The previous prime is 493987841. The next prime is 493987873. The reversal of 493987849 is 948789394.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 493987849 - 2³ = 493987841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493987841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1240977 + ... + 1241374.

It is an arithmetic number, because the mean of its divisors is an integer number (124117600).

Almost surely, 2^493987849 is an apocalyptic number.

It is an amenable number.

493987849 is a deficient number, since it is larger than the sum of its proper divisors (2482551).

493987849 is a wasteful number, since it uses less digits than its factorization.

493987849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2482550.

The product of its digits is 15676416, while the sum is 61.

The square root of 493987849 is about 22225.8374195439. The cubic root of 493987849 is about 790.5064578146.

The spelling of 493987849 in words is "four hundred ninety-three million, nine hundred eighty-seven thousand, eight hundred forty-nine".