493309261 has 4 divisors (see below), whose sum is σ = 495892224. Its totient is φ = 490726300.

The previous prime is 493309241. The next prime is 493309273. The reversal of 493309261 is 162903394.

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 493309261 - 2⁹ = 493308749 is a prime.

It is a super-2 number, since 2×493309261² = 486708053976732242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493309261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493309241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1291195 + ... + 1291576.

It is an arithmetic number, because the mean of its divisors is an integer number (123973056).

Almost surely, 2^493309261 is an apocalyptic number.

It is an amenable number.

493309261 is a deficient number, since it is larger than the sum of its proper divisors (2582963).

493309261 is a wasteful number, since it uses less digits than its factorization.

493309261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582962.

The product of its (nonzero) digits is 34992, while the sum is 37.

The square root of 493309261 is about 22210.5664268159. The cubic root of 493309261 is about 790.1443206930.

The spelling of 493309261 in words is "four hundred ninety-three million, three hundred nine thousand, two hundred sixty-one".