499999000001 has 8 divisors (see below), whose sum is σ = 516893130600. Its totient is φ = 483328632960.

The previous prime is 499998999991. The next prime is 499999000013. The reversal of 499999000001 is 100000999994.

499999000001 = 499999² + 500000².

It can be written as a sum of positive squares in 4 ways, for example, as 84553008400 + 415445991601 = 290780^2 + 644551^2 .

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 499999000001 - 2³⁴ = 482819130817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499999000091) 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 in 7 ways as a sum of consecutive naturals, for example, 55936346 + ... + 55945283.

It is an arithmetic number, because the mean of its divisors is an integer number (64611641325).

Almost surely, 2^499999000001 is an apocalyptic number.

499999000001 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

499999000001 is the 500000-th centered square number.

It is an amenable number.

499999000001 is a deficient number, since it is larger than the sum of its proper divisors (16894130599).

499999000001 is a wasteful number, since it uses less digits than its factorization.

499999000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111881779.

The product of its (nonzero) digits is 236196, while the sum is 50.

Adding to 499999000001 its reverse (100000999994), we get a palindrome (599999999995).

The spelling of 499999000001 in words is "four hundred ninety-nine billion, nine hundred ninety-nine million, one", and thus it is an aban number.