992838866569 has 9 divisors (see below), whose sum is σ = 1091314272909. Its totient is φ = 902570823660.

The previous prime is 992838866549. The next prime is 992838866599. The reversal of 992838866569 is 965668838299.

The square root of 992838866569 is 996413.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 992838866569 - 2¹³ = 992838858377 is a prime.

It is a super-4 number, since 4×992838866569⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (992838866519) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10915252 + ... + 11005834.

Almost surely, 2^992838866569 is an apocalyptic number.

992838866569 is the 996413-rd square number.

992838866569 is the 498207-th centered octagonal number.

It is an amenable number.

992838866569 is a deficient number, since it is larger than the sum of its proper divisors (98475406340).

992838866569 is an frugal number, since it uses more digits than its factorization.

992838866569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181188 (or 90594 counting only the distinct ones).

The product of its digits is 2418647040, while the sum is 79.

The spelling of 992838866569 in words is "nine hundred ninety-two billion, eight hundred thirty-eight million, eight hundred sixty-six thousand, five hundred sixty-nine".