499800069 has 6 divisors (see below), whose sum is σ = 721933446. Its totient is φ = 333200040.

The previous prime is 499800029. The next prime is 499800071. The reversal of 499800069 is 960008994.

It can be written as a sum of positive squares in only one way, i.e., 486731844 + 13068225 = 22062^2 + 3615^2 .

It is not a de Polignac number, because 499800069 - 2¹² = 499795973 is a prime.

It is a super-2 number, since 2×499800069² = 499600217944809522, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 499799997 and 499800033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499800029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27766662 + ... + 27766679.

It is an arithmetic number, because the mean of its divisors is an integer number (120322241).

Almost surely, 2^499800069 is an apocalyptic number.

It is an amenable number.

499800069 is a deficient number, since it is larger than the sum of its proper divisors (222133377).

499800069 is a wasteful number, since it uses less digits than its factorization.

499800069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55533347 (or 55533344 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 499800069 is about 22356.2087349354. The cubic root of 499800069 is about 793.5947216539.

The spelling of 499800069 in words is "four hundred ninety-nine million, eight hundred thousand, sixty-nine".