9945799 has 8 divisors (see below), whose sum is σ = 10562400. Its totient is φ = 9332736.

The previous prime is 9945781. The next prime is 9945841. The reversal of 9945799 is 9975499.

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

It is a cyclic number.

It is not a de Polignac number, because 9945799 - 2¹³ = 9937607 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9945709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6982 + ... + 8284.

It is an arithmetic number, because the mean of its divisors is an integer number (1320300).

Almost surely, 2^9945799 is an apocalyptic number.

9945799 is a deficient number, since it is larger than the sum of its proper divisors (616601).

9945799 is a wasteful number, since it uses less digits than its factorization.

9945799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769.

The product of its digits is 918540, while the sum is 52.

The square root of 9945799 is about 3153.6960855479. The cubic root of 9945799 is about 215.0535219195.

The spelling of 9945799 in words is "nine million, nine hundred forty-five thousand, seven hundred ninety-nine".