9945407090 has 24 divisors (see below), whose sum is σ = 18088360452. Its totient is φ = 3937113600.

The previous prime is 9945407071. The next prime is 9945407137. The reversal of 9945407090 is 907045499.

9945407090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 2183973289 + 7761433801 = 46733^2 + 88099^2 .

It is a super-2 number, since 2×9945407090² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 41240 + ... + 146940.

Almost surely, 2^9945407090 is an apocalyptic number.

9945407090 is a deficient number, since it is larger than the sum of its proper divisors (8142953362).

9945407090 is a wasteful number, since it uses less digits than its factorization.

9945407090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105902 (or 105805 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 9945407090 is about 99726.6618813645. The cubic root of 9945407090 is about 2150.5069718470.

The spelling of 9945407090 in words is "nine billion, nine hundred forty-five million, four hundred seven thousand, ninety".