999499986040729 has 2 divisors, whose sum is σ = 999499986040730. Its totient is φ = 999499986040728.

The previous prime is 999499986040727. The next prime is 999499986040789. The reversal of 999499986040729 is 927040689994999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 589948720099600 + 409551265941129 = 24288860^2 + 20237373^2 .

It is a cyclic number.

It is not a de Polignac number, because 999499986040729 - 2¹ = 999499986040727 is a prime.

It is a super-2 number, since 2×999499986040729² (a number of 31 digits) contains 22 as substring.

Together with 999499986040727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999499986040727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499749993020364 + 499749993020365.

It is an arithmetic number, because the mean of its divisors is an integer number (499749993020365).

Almost surely, 2^{999499986040729} is an apocalyptic number.

It is an amenable number.

999499986040729 is a deficient number, since it is larger than the sum of its proper divisors (1).

999499986040729 is an equidigital number, since it uses as much as digits as its factorization.

999499986040729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51426482688, while the sum is 94.

The spelling of 999499986040729 in words is "nine hundred ninety-nine trillion, four hundred ninety-nine billion, nine hundred eighty-six million, forty thousand, seven hundred twenty-nine".