494413897 has 4 divisors (see below), whose sum is σ = 494902980. Its totient is φ = 493924816.

The previous prime is 494413859. The next prime is 494413919. The reversal of 494413897 is 798314494.

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 14409616 + 480004281 = 3796^2 + 21909^2 .

It is a cyclic number.

It is not a de Polignac number, because 494413897 - 2⁷ = 494413769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494413897.

It is not an unprimeable number, because it can be changed into a prime (494413807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243022 + ... + 245047.

It is an arithmetic number, because the mean of its divisors is an integer number (123725745).

Almost surely, 2^494413897 is an apocalyptic number.

It is an amenable number.

494413897 is a deficient number, since it is larger than the sum of its proper divisors (489083).

494413897 is a wasteful number, since it uses less digits than its factorization.

494413897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489082.

The product of its digits is 870912, while the sum is 49.

The square root of 494413897 is about 22235.4198746055. The cubic root of 494413897 is about 790.7336543053.

The spelling of 494413897 in words is "four hundred ninety-four million, four hundred thirteen thousand, eight hundred ninety-seven".