499942189 has 2 divisors, whose sum is σ = 499942190. Its totient is φ = 499942188.

The previous prime is 499942129. The next prime is 499942207. The reversal of 499942189 is 981249994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 352125225 + 147816964 = 18765^2 + 12158^2 .

It is a cyclic number.

It is not a de Polignac number, because 499942189 - 2⁷ = 499942061 is a prime.

It is a super-2 number, since 2×499942189² = 499884384684223442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499942129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249971094 + 249971095.

It is an arithmetic number, because the mean of its divisors is an integer number (249971095).

Almost surely, 2^499942189 is an apocalyptic number.

It is an amenable number.

499942189 is a deficient number, since it is larger than the sum of its proper divisors (1).

499942189 is an equidigital number, since it uses as much as digits as its factorization.

499942189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 55.

The square root of 499942189 is about 22359.3870443713. The cubic root of 499942189 is about 793.6699350577.

The spelling of 499942189 in words is "four hundred ninety-nine million, nine hundred forty-two thousand, one hundred eighty-nine".