494197973 has 4 divisors (see below), whose sum is σ = 523268460. Its totient is φ = 465127488.

The previous prime is 494197967. The next prime is 494197981. The reversal of 494197973 is 379791494.

It is a happy number.

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 395930404 + 98267569 = 19898^2 + 9913^2 .

It is a cyclic number.

It is not a de Polignac number, because 494197973 - 2⁶ = 494197909 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 (494197273) 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, 14535218 + ... + 14535251.

It is an arithmetic number, because the mean of its divisors is an integer number (130817115).

Almost surely, 2^494197973 is an apocalyptic number.

It is an amenable number.

494197973 is a deficient number, since it is larger than the sum of its proper divisors (29070487).

494197973 is a wasteful number, since it uses less digits than its factorization.

494197973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29070486.

The product of its digits is 1714608, while the sum is 53.

The square root of 494197973 is about 22230.5639379661. The cubic root of 494197973 is about 790.6185259105.

The spelling of 494197973 in words is "four hundred ninety-four million, one hundred ninety-seven thousand, nine hundred seventy-three".