9945013 has 8 divisors (see below), whose sum is σ = 10886456. Its totient is φ = 9028800.

The previous prime is 9944953. The next prime is 9945043. The reversal of 9945013 is 3105499.

It can be written as a sum of positive squares in 4 ways, for example, as 97969 + 9847044 = 313^2 + 3138^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9945013 is a prime.

It is a Duffinian number.

9945013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5478 + ... + 7063.

It is an arithmetic number, because the mean of its divisors is an integer number (1360807).

Almost surely, 2^9945013 is an apocalyptic number.

It is an amenable number.

9945013 is a deficient number, since it is larger than the sum of its proper divisors (941443).

9945013 is a wasteful number, since it uses less digits than its factorization.

9945013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12615.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 9945013 is about 3153.5714674001. The cubic root of 9945013 is about 215.0478566625.

The spelling of 9945013 in words is "nine million, nine hundred forty-five thousand, thirteen".