494277851 has 4 divisors (see below), whose sum is σ = 494931552. Its totient is φ = 493624152.

The previous prime is 494277829. The next prime is 494277859. The reversal of 494277851 is 158772494.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158772494 = 2 ⋅79386247.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-494277851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 494277796 and 494277805.

It is not an unprimeable number, because it can be changed into a prime (494277859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325715 + ... + 327228.

It is an arithmetic number, because the mean of its divisors is an integer number (123732888).

Almost surely, 2^494277851 is an apocalyptic number.

494277851 is a deficient number, since it is larger than the sum of its proper divisors (653701).

494277851 is an equidigital number, since it uses as much as digits as its factorization.

494277851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653700.

The product of its digits is 564480, while the sum is 47.

The square root of 494277851 is about 22232.3604459805. The cubic root of 494277851 is about 790.6611199234.

The spelling of 494277851 in words is "four hundred ninety-four million, two hundred seventy-seven thousand, eight hundred fifty-one".