9994945 has 8 divisors (see below), whose sum is σ = 12012840. Its totient is φ = 7983360.

The previous prime is 9994913. The next prime is 9994951. The reversal of 9994945 is 5494999.

It can be written as a sum of positive squares in 4 ways, for example, as 204304 + 9790641 = 452^2 + 3129^2 .

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

It is not a de Polignac number, because 9994945 - 2⁵ = 9994913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3271 + ... + 5539.

It is an arithmetic number, because the mean of its divisors is an integer number (1501605).

Almost surely, 2^9994945 is an apocalyptic number.

It is an amenable number.

9994945 is a deficient number, since it is larger than the sum of its proper divisors (2017895).

9994945 is a wasteful number, since it uses less digits than its factorization.

9994945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155.

The product of its digits is 524880, while the sum is 49.

The square root of 9994945 is about 3161.4782934570. The cubic root of 9994945 is about 215.4071606600.

The spelling of 9994945 in words is "nine million, nine hundred ninety-four thousand, nine hundred forty-five".