499985537 has 2 divisors, whose sum is σ = 499985538. Its totient is φ = 499985536.

The previous prime is 499985527. The next prime is 499985539. The reversal of 499985537 is 735589994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 487482241 + 12503296 = 22079^2 + 3536^2 .

It is a cyclic number.

It is not a de Polignac number, because 499985537 - 2¹⁴ = 499969153 is a prime.

Together with 499985539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (499985539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249992768 + 249992769.

It is an arithmetic number, because the mean of its divisors is an integer number (249992769).

Almost surely, 2^499985537 is an apocalyptic number.

It is an amenable number.

499985537 is a deficient number, since it is larger than the sum of its proper divisors (1).

499985537 is an equidigital number, since it uses as much as digits as its factorization.

499985537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 59.

The square root of 499985537 is about 22360.3563701476. The cubic root of 499985537 is about 793.6928730498.

The spelling of 499985537 in words is "four hundred ninety-nine million, nine hundred eighty-five thousand, five hundred thirty-seven".