494774879 has 2 divisors, whose sum is σ = 494774880. Its totient is φ = 494774878.

The previous prime is 494774821. The next prime is 494774909. The reversal of 494774879 is 978477494.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494774879 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494774279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247387439 + 247387440.

It is an arithmetic number, because the mean of its divisors is an integer number (247387440).

Almost surely, 2^494774879 is an apocalyptic number.

494774879 is a deficient number, since it is larger than the sum of its proper divisors (1).

494774879 is an equidigital number, since it uses as much as digits as its factorization.

494774879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 59.

The square root of 494774879 is about 22243.5356676946. The cubic root of 494774879 is about 790.9260512539.

The spelling of 494774879 in words is "four hundred ninety-four million, seven hundred seventy-four thousand, eight hundred seventy-nine".