494442457 has 2 divisors, whose sum is σ = 494442458. Its totient is φ = 494442456.

The previous prime is 494442451. The next prime is 494442463. The reversal of 494442457 is 754244494.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (494442451) and next prime (494442463).

It can be written as a sum of positive squares in only one way, i.e., 415303641 + 79138816 = 20379^2 + 8896^2 .

It is a cyclic number.

It is not a de Polignac number, because 494442457 - 2¹¹ = 494440409 is a prime.

It is not a weakly prime, because it can be changed into another prime (494442451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247221228 + 247221229.

It is an arithmetic number, because the mean of its divisors is an integer number (247221229).

Almost surely, 2^494442457 is an apocalyptic number.

It is an amenable number.

494442457 is a deficient number, since it is larger than the sum of its proper divisors (1).

494442457 is an equidigital number, since it uses as much as digits as its factorization.

494442457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 645120, while the sum is 43.

The square root of 494442457 is about 22236.0620839212. The cubic root of 494442457 is about 790.7488796853.

The spelling of 494442457 in words is "four hundred ninety-four million, four hundred forty-two thousand, four hundred fifty-seven".