992061009 has 9 divisors (see below), whose sum is σ = 1433113513. Its totient is φ = 661311012.

The previous prime is 992060999. The next prime is 992061023. The reversal of 992061009 is 900160299.

The square root of 992061009 is 31497.

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

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 992061009 - 2⁹ = 992060497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (992061089) 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, 89242 + ... + 99740.

Almost surely, 2^992061009 is an apocalyptic number.

992061009 is the 31497-th square number.

992061009 is the 15749-th centered octagonal number.

It is an amenable number.

992061009 is a deficient number, since it is larger than the sum of its proper divisors (441052504).

992061009 is an frugal number, since it uses more digits than its factorization.

992061009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21004 (or 10502 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The cubic root of 992061009 is about 997.3466355506.

Multiplying 992061009 by its sum of digits (36), we get a square (35714196324 = 188982²).

The spelling of 992061009 in words is "nine hundred ninety-two million, sixty-one thousand, nine".