92821980889 has 9 divisors (see below), whose sum is σ = 102031150431. Its totient is φ = 84380572320.

The previous prime is 92821980841. The next prime is 92821980899. The reversal of 92821980889 is 98808912829.

The square root of 92821980889 is 304667.

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

It can be written as a sum of positive squares in only one way, i.e., 1129296025 + 91692684864 = 33605^2 + 302808^2 .

It is not a de Polignac number, because 92821980889 - 2⁷ = 92821980761 is a prime.

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 92821980889.

It is not an unprimeable number, because it can be changed into a prime (92821980899) 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, 3337489 + ... + 3365185.

Almost surely, 2^92821980889 is an apocalyptic number.

92821980889 is the 304667-th square number.

92821980889 is the 152334-th centered octagonal number.

It is an amenable number.

92821980889 is a deficient number, since it is larger than the sum of its proper divisors (9209169542).

92821980889 is an frugal number, since it uses more digits than its factorization.

92821980889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55416 (or 27708 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 64.

Multiplying 92821980889 by its sum of digits (64), we get a square (5940606776896 = 2437336²).

The spelling of 92821980889 in words is "ninety-two billion, eight hundred twenty-one million, nine hundred eighty thousand, eight hundred eighty-nine".