9953945 has 16 divisors (see below), whose sum is σ = 12441600. Its totient is φ = 7636800.

The previous prime is 9953927. The next prime is 9953947. The reversal of 9953945 is 5493599.

It is not a de Polignac number, because 9953945 - 2¹⁴ = 9937561 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9953896 and 9953905.

It is not an unprimeable number, because it can be changed into a prime (9953947) 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 15 ways as a sum of consecutive naturals, for example, 22880 + ... + 23310.

It is an arithmetic number, because the mean of its divisors is an integer number (777600).

Almost surely, 2^9953945 is an apocalyptic number.

It is an amenable number.

9953945 is a deficient number, since it is larger than the sum of its proper divisors (2487655).

9953945 is a wasteful number, since it uses less digits than its factorization.

9953945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616.

The product of its digits is 218700, while the sum is 44.

The square root of 9953945 is about 3154.9873216861. The cubic root of 9953945 is about 215.1122183244.

The spelling of 9953945 in words is "nine million, nine hundred fifty-three thousand, nine hundred forty-five".