9772749 has 24 divisors (see below), whose sum is σ = 16403712. Its totient is φ = 5490720.

The previous prime is 9772747. The next prime is 9772753. The reversal of 9772749 is 9472779.

It is a happy number.

It is not a de Polignac number, because 9772749 - 2¹ = 9772747 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2572 + ... + 5114.

It is an arithmetic number, because the mean of its divisors is an integer number (683488).

Almost surely, 2^9772749 is an apocalyptic number.

It is an amenable number.

9772749 is a deficient number, since it is larger than the sum of its proper divisors (6630963).

9772749 is a wasteful number, since it uses less digits than its factorization.

9772749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617 (or 2614 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 9772749 is about 3126.1396321982. The cubic root of 9772749 is about 213.7989566738.

The spelling of 9772749 in words is "nine million, seven hundred seventy-two thousand, seven hundred forty-nine".