999522894421297 has 4 divisors (see below), whose sum is σ = 999522958955620. Its totient is φ = 999522829886976.

The previous prime is 999522894421243. The next prime is 999522894421327. The reversal of 999522894421297 is 792124498225999.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 958170483840241 + 41352410581056 = 30954329^2 + 6430584^2 .

It is a 3-Lehmer number, since φ(999522894421297) divides (999522894421297-1)³.

It is a cyclic number.

It is not a de Polignac number, because 999522894421297 - 2³⁵ = 999488534682929 is a prime.

It is a deceptive number, since it divides R_{999522894421296}.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999522894421297.

It is not an unprimeable number, because it can be changed into a prime (999522294421297) 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, 6453433 + ... + 45174025.

It is an arithmetic number, because the mean of its divisors is an integer number (249880739738905).

It is a Poulet number, since it divides 2^{999522894421296}-1.

Almost surely, 2^{999522894421297} is an apocalyptic number.

999522894421297 is the 25813729-th pentagonal number.

It is an amenable number.

999522894421297 is a deficient number, since it is larger than the sum of its proper divisors (64534323).

999522894421297 is a wasteful number, since it uses less digits than its factorization.

999522894421297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64534322.

The product of its digits is 4232632320, while the sum is 82.

The spelling of 999522894421297 in words is "nine hundred ninety-nine trillion, five hundred twenty-two billion, eight hundred ninety-four million, four hundred twenty-one thousand, two hundred ninety-seven".