499998169 has 8 divisors (see below), whose sum is σ = 577538208. Its totient is φ = 427805760.

The previous prime is 499998143. The next prime is 499998181. The reversal of 499998169 is 961899994.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 499998169 - 2⁵ = 499998137 is a prime.

It is a super-2 number, since 2×499998169² = 499996338006705122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 499998169.

It is not an unprimeable number, because it can be changed into a prime (499998139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1336707 + ... + 1337080.

It is an arithmetic number, because the mean of its divisors is an integer number (72192276).

Almost surely, 2^499998169 is an apocalyptic number.

It is an amenable number.

499998169 is a deficient number, since it is larger than the sum of its proper divisors (77540039).

499998169 is a wasteful number, since it uses less digits than its factorization.

499998169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2673815.

The product of its digits is 11337408, while the sum is 64.

The square root of 499998169 is about 22360.6388325557. The cubic root of 499998169 is about 793.6995571391.

The spelling of 499998169 in words is "four hundred ninety-nine million, nine hundred ninety-eight thousand, one hundred sixty-nine".