493999994 has 4 divisors (see below), whose sum is σ = 740999994. Its totient is φ = 246999996.

The previous prime is 493999969. The next prime is 493999997. The reversal of 493999994 is 499999394.

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

It can be written as a sum of positive squares in only one way, i.e., 335365969 + 158634025 = 18313^2 + 12595^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 493999994.

It is not an unprimeable number, because it can be changed into a prime (493999997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123499997 + ... + 123500000.

Almost surely, 2^493999994 is an apocalyptic number.

493999994 is a deficient number, since it is larger than the sum of its proper divisors (247000000).

493999994 is a wasteful number, since it uses less digits than its factorization.

493999994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246999999.

The product of its digits is 25509168, while the sum is 65.

The square root of 493999994 is about 22226.1106359165. The cubic root of 493999994 is about 790.5129361266.

The spelling of 493999994 in words is "four hundred ninety-three million, nine hundred ninety-nine thousand, nine hundred ninety-four".