493249009 has 4 divisors (see below), whose sum is σ = 538089840. Its totient is φ = 448408180.

The previous prime is 493248913. The next prime is 493249013. The reversal of 493249009 is 900942394.

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 not a de Polignac number, because 493249009 - 2⁷ = 493248881 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493249079) 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, 22420399 + ... + 22420420.

It is an arithmetic number, because the mean of its divisors is an integer number (134522460).

Almost surely, 2^493249009 is an apocalyptic number.

It is an amenable number.

493249009 is a deficient number, since it is larger than the sum of its proper divisors (44840831).

493249009 is a wasteful number, since it uses less digits than its factorization.

493249009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44840830.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 493249009 is about 22209.2100039601. The cubic root of 493249009 is about 790.1121503976.

The spelling of 493249009 in words is "four hundred ninety-three million, two hundred forty-nine thousand, nine".