9007749 has 6 divisors (see below), whose sum is σ = 13011206. Its totient is φ = 6005160.

The previous prime is 9007727. The next prime is 9007753. The reversal of 9007749 is 9477009.

It can be written as a sum of positive squares in only one way, i.e., 5832225 + 3175524 = 2415^2 + 1782^2 .

It is not a de Polignac number, because 9007749 - 2⁵ = 9007717 is a prime.

It is a super-2 number, since 2×9007749² = 162279084094002, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9007709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 500422 + ... + 500439.

Almost surely, 2^9007749 is an apocalyptic number.

It is an amenable number.

9007749 is a deficient number, since it is larger than the sum of its proper divisors (4003457).

9007749 is a wasteful number, since it uses less digits than its factorization.

9007749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000867 (or 1000864 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 9007749 is about 3001.2912221242. The cubic root of 9007749 is about 208.0680635857.

It can be divided in two parts, 900 and 7749, that added together give a square (8649 = 93²).

The spelling of 9007749 in words is "nine million, seven thousand, seven hundred forty-nine".