9945727 has 4 divisors (see below), whose sum is σ = 10849896. Its totient is φ = 9041560.

The previous prime is 9945709. The next prime is 9945743. The reversal of 9945727 is 7275499.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9945727 - 2¹¹ = 9943679 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 (9945707) 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, 452068 + ... + 452089.

It is an arithmetic number, because the mean of its divisors is an integer number (2712474).

Almost surely, 2^9945727 is an apocalyptic number.

9945727 is a deficient number, since it is larger than the sum of its proper divisors (904169).

9945727 is a wasteful number, since it uses less digits than its factorization.

9945727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904168.

The product of its digits is 158760, while the sum is 43.

The square root of 9945727 is about 3153.6846703499. The cubic root of 9945727 is about 215.0530029771.

The spelling of 9945727 in words is "nine million, nine hundred forty-five thousand, seven hundred twenty-seven".