493766861 has 4 divisors (see below), whose sum is σ = 564304992. Its totient is φ = 423228732.

The previous prime is 493766857. The next prime is 493766899. The reversal of 493766861 is 168667394.

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 493766861 - 2² = 493766857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493766261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35269055 + ... + 35269068.

It is an arithmetic number, because the mean of its divisors is an integer number (141076248).

Almost surely, 2^493766861 is an apocalyptic number.

It is an amenable number.

493766861 is a deficient number, since it is larger than the sum of its proper divisors (70538131).

493766861 is an equidigital number, since it uses as much as digits as its factorization.

493766861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70538130.

The product of its digits is 1306368, while the sum is 50.

The square root of 493766861 is about 22220.8654421919. The cubic root of 493766861 is about 790.3885611917.

The spelling of 493766861 in words is "four hundred ninety-three million, seven hundred sixty-six thousand, eight hundred sixty-one".