499993457 has 2 divisors, whose sum is σ = 499993458. Its totient is φ = 499993456.

The previous prime is 499993453. The next prime is 499993499. The reversal of 499993457 is 754399994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403246561 + 96746896 = 20081^2 + 9836^2 .

It is a cyclic number.

It is not a de Polignac number, because 499993457 - 2² = 499993453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 499993396 and 499993405.

It is not a weakly prime, because it can be changed into another prime (499993453) 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 as a sum of consecutive naturals, namely, 249996728 + 249996729.

It is an arithmetic number, because the mean of its divisors is an integer number (249996729).

Almost surely, 2^499993457 is an apocalyptic number.

It is an amenable number.

499993457 is a deficient number, since it is larger than the sum of its proper divisors (1).

499993457 is an equidigital number, since it uses as much as digits as its factorization.

499993457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 59.

The square root of 499993457 is about 22360.5334685915. The cubic root of 499993457 is about 793.6970638473.

The spelling of 499993457 in words is "four hundred ninety-nine million, nine hundred ninety-three thousand, four hundred fifty-seven".