9520749 has 18 divisors (see below), whose sum is σ = 15998190. Its totient is φ = 5440176.

The previous prime is 9520747. The next prime is 9520769. The reversal of 9520749 is 9470259.

It can be written as a sum of positive squares in only one way, i.e., 8037225 + 1483524 = 2835^2 + 1218^2 .

It is not a de Polignac number, because 9520749 - 2¹ = 9520747 is a prime.

9520749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9520741) 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 17 ways as a sum of consecutive naturals, for example, 10354 + ... + 11235.

Almost surely, 2^9520749 is an apocalyptic number.

It is an amenable number.

9520749 is a deficient number, since it is larger than the sum of its proper divisors (6477441).

9520749 is a wasteful number, since it uses less digits than its factorization.

9520749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21609 (or 21599 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 9520749 is about 3085.5710978683. The cubic root of 9520749 is about 211.9452585017.

The spelling of 9520749 in words is "nine million, five hundred twenty thousand, seven hundred forty-nine".