494893213 has 2 divisors, whose sum is σ = 494893214. Its totient is φ = 494893212.

The previous prime is 494893199. The next prime is 494893249. The reversal of 494893213 is 312398494.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395731449 + 99161764 = 19893^2 + 9958^2 .

It is a cyclic number.

It is not a de Polignac number, because 494893213 - 2⁹ = 494892701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 494893213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (494893813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247446606 + 247446607.

It is an arithmetic number, because the mean of its divisors is an integer number (247446607).

Almost surely, 2^494893213 is an apocalyptic number.

It is an amenable number.

494893213 is a deficient number, since it is larger than the sum of its proper divisors (1).

494893213 is an equidigital number, since it uses as much as digits as its factorization.

494893213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 43.

The square root of 494893213 is about 22246.1954724847. The cubic root of 494893213 is about 790.9891007921.

The spelling of 494893213 in words is "four hundred ninety-four million, eight hundred ninety-three thousand, two hundred thirteen".