9992745 has 24 divisors (see below), whose sum is σ = 19795776. Its totient is φ = 4567968.

The previous prime is 9992743. The next prime is 9992761. The reversal of 9992745 is 5472999.

It is not a de Polignac number, because 9992745 - 2¹ = 9992743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 9 + 9 + 9³ + 2¹⁵ + 7⁸ + 4¹¹ + 5³ .

It is a self number, because there is not a number n which added to its sum of digits gives 9992745.

It is not an unprimeable number, because it can be changed into a prime (9992743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15547 + ... + 16176.

It is an arithmetic number, because the mean of its divisors is an integer number (824824).

Almost surely, 2^9992745 is an apocalyptic number.

It is an amenable number.

9992745 is a deficient number, since it is larger than the sum of its proper divisors (9803031).

9992745 is a wasteful number, since it uses less digits than its factorization.

9992745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31741 (or 31738 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 9992745 is about 3161.1303358134. The cubic root of 9992745 is about 215.3913549860.

The spelling of 9992745 in words is "nine million, nine hundred ninety-two thousand, seven hundred forty-five".