9945076 has 6 divisors (see below), whose sum is σ = 17403890. Its totient is φ = 4972536.

The previous prime is 9945071. The next prime is 9945077. The reversal of 9945076 is 6705499.

It can be written as a sum of positive squares in only one way, i.e., 7695076 + 2250000 = 2774^2 + 1500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945071) 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 as a sum of consecutive naturals, namely, 1243131 + ... + 1243138.

Almost surely, 2^9945076 is an apocalyptic number.

9945076 is the 1995-th centered pentagonal number.

It is an amenable number.

9945076 is a deficient number, since it is larger than the sum of its proper divisors (7458814).

9945076 is a wasteful number, since it uses less digits than its factorization.

9945076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486273 (or 2486271 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 9945076 is about 3153.5814560591. The cubic root of 9945076 is about 215.0483107590.

The spelling of 9945076 in words is "nine million, nine hundred forty-five thousand, seventy-six".