8392208881 has 27 divisors (see below), whose sum is σ = 10223237451. Its totient is φ = 6868476384.

The previous prime is 8392208879. The next prime is 8392208893. The reversal of 8392208881 is 1888022938.

The square root of 8392208881 is 91609.

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., 1383170481 + 7009038400 = 37191^2 + 83720^2 .

It is not a de Polignac number, because 8392208881 - 2¹ = 8392208879 is a prime.

It is a super-2 number, since 2×8392208881² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (8392208681) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 14748765 + ... + 14749333.

Almost surely, 2^8392208881 is an apocalyptic number.

8392208881 is the 91609-th square number.

8392208881 is the 45805-th centered octagonal number.

It is an amenable number.

8392208881 is a deficient number, since it is larger than the sum of its proper divisors (1831028570).

8392208881 is an frugal number, since it uses more digits than its factorization.

8392208881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The cubic root of 8392208881 is about 2032.1640378745.

Multiplying 8392208881 by its sum of digits (49), we get a square (411218235169 = 641263²).

8392208881 divided by its sum of digits (49) gives a square (171269569 = 13087²).

The spelling of 8392208881 in words is "eight billion, three hundred ninety-two million, two hundred eight thousand, eight hundred eighty-one".