499699969 has 4 divisors (see below), whose sum is σ = 508169520. Its totient is φ = 491230420.

The previous prime is 499699939. The next prime is 499699979. The reversal of 499699969 is 969996994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 499699969 - 2⁹ = 499699457 is a prime.

It is a super-2 number, since 2×499699969² = 499400118037201922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499699898 and 499699907.

It is not an unprimeable number, because it can be changed into a prime (499699919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4234687 + ... + 4234804.

It is an arithmetic number, because the mean of its divisors is an integer number (127042380).

Almost surely, 2^499699969 is an apocalyptic number.

It is an amenable number.

499699969 is a deficient number, since it is larger than the sum of its proper divisors (8469551).

499699969 is an equidigital number, since it uses as much as digits as its factorization.

499699969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469550.

The product of its digits is 76527504, while the sum is 70.

The square root of 499699969 is about 22353.9698711437. The cubic root of 499699969 is about 793.5417377106.

The spelling of 499699969 in words is "four hundred ninety-nine million, six hundred ninety-nine thousand, nine hundred sixty-nine".