9409749 has 8 divisors (see below), whose sum is σ = 12582720. Its totient is φ = 6254976.

The previous prime is 9409747. The next prime is 9409753. The reversal of 9409749 is 9479049.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9409749 - 2¹ = 9409747 is a prime.

It is a Curzon number.

9409749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9409749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9409747) 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 7 ways as a sum of consecutive naturals, for example, 3292 + ... + 5445.

It is an arithmetic number, because the mean of its divisors is an integer number (1572840).

Almost surely, 2^9409749 is an apocalyptic number.

It is an amenable number.

9409749 is a deficient number, since it is larger than the sum of its proper divisors (3172971).

9409749 is a wasteful number, since it uses less digits than its factorization.

9409749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9099.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 9409749 is about 3067.5314179320. The cubic root of 9409749 is about 211.1183645912.

The spelling of 9409749 in words is "nine million, four hundred nine thousand, seven hundred forty-nine".