499969669 has 2 divisors, whose sum is σ = 499969670. Its totient is φ = 499969668.

The previous prime is 499969583. The next prime is 499969697. The reversal of 499969669 is 966969994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476330625 + 23639044 = 21825^2 + 4862^2 .

It is a cyclic number.

It is not a de Polignac number, because 499969669 - 2¹¹ = 499967621 is a prime.

It is a super-2 number, since 2×499969669² = 499939339839939122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499969369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249984834 + 249984835.

It is an arithmetic number, because the mean of its divisors is an integer number (249984835).

Almost surely, 2^499969669 is an apocalyptic number.

It is an amenable number.

499969669 is a deficient number, since it is larger than the sum of its proper divisors (1).

499969669 is an equidigital number, since it uses as much as digits as its factorization.

499969669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51018336, while the sum is 67.

The square root of 499969669 is about 22360.0015429338. The cubic root of 499969669 is about 793.6844765058.

The spelling of 499969669 in words is "four hundred ninety-nine million, nine hundred sixty-nine thousand, six hundred sixty-nine".