499908557 has 2 divisors, whose sum is σ = 499908558. Its totient is φ = 499908556.

The previous prime is 499908527. The next prime is 499908569. The reversal of 499908557 is 755809994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 470629636 + 29278921 = 21694^2 + 5411^2 .

It is a cyclic number.

It is not a de Polignac number, because 499908557 - 2¹⁰ = 499907533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499908527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249954278 + 249954279.

It is an arithmetic number, because the mean of its divisors is an integer number (249954279).

Almost surely, 2^499908557 is an apocalyptic number.

It is an amenable number.

499908557 is a deficient number, since it is larger than the sum of its proper divisors (1).

499908557 is an equidigital number, since it uses as much as digits as its factorization.

499908557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4082400, while the sum is 56.

The square root of 499908557 is about 22358.6349538607. The cubic root of 499908557 is about 793.6521374627.

The spelling of 499908557 in words is "four hundred ninety-nine million, nine hundred eight thousand, five hundred fifty-seven".