9920635 has 12 divisors (see below), whose sum is σ = 12086928. Its totient is φ = 7816608.

The previous prime is 9920621. The next prime is 9920653. The reversal of 9920635 is 5360299.

It is a happy number.

It is not a de Polignac number, because 9920635 - 2⁷ = 9920507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9920635.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 59322 + ... + 59488.

It is an arithmetic number, because the mean of its divisors is an integer number (1007244).

Almost surely, 2^9920635 is an apocalyptic number.

9920635 is a deficient number, since it is larger than the sum of its proper divisors (2166293).

9920635 is a wasteful number, since it uses less digits than its factorization.

9920635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 9920635 is about 3149.7039543424. The cubic root of 9920635 is about 214.8719988045.

The spelling of 9920635 in words is "nine million, nine hundred twenty thousand, six hundred thirty-five".