999294835129 has 4 divisors (see below), whose sum is σ = 1026302803684. Its totient is φ = 972286866576.

The previous prime is 999294835127. The next prime is 999294835141. The reversal of 999294835129 is 921538492999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 859588579600 + 139706255529 = 927140^2 + 373773^2 .

It is a cyclic number.

It is not a de Polignac number, because 999294835129 - 2¹ = 999294835127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999294835127) 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, 13503984222 + ... + 13503984295.

It is an arithmetic number, because the mean of its divisors is an integer number (256575700921).

Almost surely, 2^999294835129 is an apocalyptic number.

It is an amenable number.

999294835129 is a deficient number, since it is larger than the sum of its proper divisors (27007968555).

999294835129 is a wasteful number, since it uses less digits than its factorization.

999294835129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27007968554.

The product of its digits is 113374080, while the sum is 70.

The spelling of 999294835129 in words is "nine hundred ninety-nine billion, two hundred ninety-four million, eight hundred thirty-five thousand, one hundred twenty-nine".