493109423 has 4 divisors (see below), whose sum is σ = 504577128. Its totient is φ = 481641720.

The previous prime is 493109411. The next prime is 493109431. The reversal of 493109423 is 324901394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324901394 = 2 ⋅162450697.

It is a cyclic number.

It is not a de Polignac number, because 493109423 - 2¹⁸ = 492847279 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 (493109473) 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, 5733788 + ... + 5733873.

It is an arithmetic number, because the mean of its divisors is an integer number (126144282).

Almost surely, 2^493109423 is an apocalyptic number.

493109423 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

493109423 is a deficient number, since it is larger than the sum of its proper divisors (11467705).

493109423 is a wasteful number, since it uses less digits than its factorization.

493109423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11467704.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 493109423 is about 22206.0672564955. The cubic root of 493109423 is about 790.0376113055.

The spelling of 493109423 in words is "four hundred ninety-three million, one hundred nine thousand, four hundred twenty-three".