494909479 has 2 divisors, whose sum is σ = 494909480. Its totient is φ = 494909478.

The previous prime is 494909461. The next prime is 494909557. The reversal of 494909479 is 974909494.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 494909479 - 2¹³ = 494901287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494909419) 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, 247454739 + 247454740.

It is an arithmetic number, because the mean of its divisors is an integer number (247454740).

Almost surely, 2^494909479 is an apocalyptic number.

494909479 is a deficient number, since it is larger than the sum of its proper divisors (1).

494909479 is an equidigital number, since it uses as much as digits as its factorization.

494909479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The square root of 494909479 is about 22246.5610600830. The cubic root of 494909479 is about 790.9977666938.

The spelling of 494909479 in words is "four hundred ninety-four million, nine hundred nine thousand, four hundred seventy-nine".