494919493 has 4 divisors (see below), whose sum is σ = 499819788. Its totient is φ = 490019200.

The previous prime is 494919463. The next prime is 494919559. The reversal of 494919493 is 394919494.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 450203524 + 44715969 = 21218^2 + 6687^2 .

It is a cyclic number.

It is not a de Polignac number, because 494919493 - 2⁵ = 494919461 is a prime.

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 494919493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494919463) 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, 2449996 + ... + 2450197.

It is an arithmetic number, because the mean of its divisors is an integer number (124954947).

Almost surely, 2^494919493 is an apocalyptic number.

It is an amenable number.

494919493 is a deficient number, since it is larger than the sum of its proper divisors (4900295).

494919493 is a wasteful number, since it uses less digits than its factorization.

494919493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4900294.

The product of its digits is 1259712, while the sum is 52.

The square root of 494919493 is about 22246.7861274387. The cubic root of 494919493 is about 791.0031016749.

Subtracting from 494919493 its reverse (394919494), we obtain a palindrome (99999999).

It can be divided in two parts, 4949 and 19493, that added together give a palindrome (24442).

The spelling of 494919493 in words is "four hundred ninety-four million, nine hundred nineteen thousand, four hundred ninety-three".