499655801 has 2 divisors, whose sum is σ = 499655802. Its totient is φ = 499655800.

The previous prime is 499655773. The next prime is 499655869. The reversal of 499655801 is 108556994.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342805225 + 156850576 = 18515^2 + 12524^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499655801 is a prime.

It is not a weakly prime, because it can be changed into another prime (499655201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249827900 + 249827901.

It is an arithmetic number, because the mean of its divisors is an integer number (249827901).

Almost surely, 2^499655801 is an apocalyptic number.

It is an amenable number.

499655801 is a deficient number, since it is larger than the sum of its proper divisors (1).

499655801 is an equidigital number, since it uses as much as digits as its factorization.

499655801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 499655801 is about 22352.9819263560. The cubic root of 499655801 is about 793.5183568912.

The spelling of 499655801 in words is "four hundred ninety-nine million, six hundred fifty-five thousand, eight hundred one".