499869187 has 2 divisors, whose sum is σ = 499869188. Its totient is φ = 499869186.

The previous prime is 499869163. The next prime is 499869191. The reversal of 499869187 is 781968994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 499869187 - 2¹⁹ = 499344899 is a prime.

It is a super-2 number, since 2×499869187² = 499738408224081938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (499869287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249934593 + 249934594.

It is an arithmetic number, because the mean of its divisors is an integer number (249934594).

Almost surely, 2^499869187 is an apocalyptic number.

499869187 is a deficient number, since it is larger than the sum of its proper divisors (1).

499869187 is an equidigital number, since it uses as much as digits as its factorization.

499869187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 61.

The square root of 499869187 is about 22357.7545160510. The cubic root of 499869187 is about 793.6313023822.

The spelling of 499869187 in words is "four hundred ninety-nine million, eight hundred sixty-nine thousand, one hundred eighty-seven".