10009749 has 4 divisors (see below), whose sum is σ = 13346336. Its totient is φ = 6673164.

The previous prime is 10009729. The next prime is 10009777. The reversal of 10009749 is 94790001.

10009749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 10009749 - 2¹⁹ = 9485461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10009709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1668289 + ... + 1668294.

It is an arithmetic number, because the mean of its divisors is an integer number (3336584).

Almost surely, 2^10009749 is an apocalyptic number.

It is an amenable number.

10009749 is a deficient number, since it is larger than the sum of its proper divisors (3336587).

10009749 is an equidigital number, since it uses as much as digits as its factorization.

10009749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336586.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 10009749 is about 3163.8187369064. The cubic root of 10009749 is about 215.5134582099.

The spelling of 10009749 in words is "ten million, nine thousand, seven hundred forty-nine".