499991000041 has 16 divisors (see below), whose sum is σ = 544120830288. Its totient is φ = 456676704000.

The previous prime is 499990999997. The next prime is 499991000087. The reversal of 499991000041 is 140000199994.

499991000041 = 499995² + 499996².

It can be written as a sum of positive squares in 8 ways, for example, as 106145640000 + 393845360041 = 325800^2 + 627571^2 .

It is a cyclic number.

It is not a de Polignac number, because 499991000041 - 2¹³ = 499990991849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 499990999955 and 499991000000.

It is not an unprimeable number, because it can be changed into a prime (499991000141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2010915 + ... + 2245831.

It is an arithmetic number, because the mean of its divisors is an integer number (34007551893).

Almost surely, 2^499991000041 is an apocalyptic number.

499991000041 is the 499996-th centered square number.

It is an amenable number.

499991000041 is a deficient number, since it is larger than the sum of its proper divisors (44129830247).

499991000041 is a wasteful number, since it uses less digits than its factorization.

499991000041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236652.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 499991000041 in words is "four hundred ninety-nine billion, nine hundred ninety-one million, forty-one", and thus it is an aban number.