9920146 has 16 divisors (see below), whose sum is σ = 16300440. Its totient is φ = 4506880.

The previous prime is 9920137. The next prime is 9920159. The reversal of 9920146 is 6410299.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9541921 + 378225 = 3089^2 + 615^2 .

It is a super-2 number, since 2×9920146² = 196818593322632, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 4045 + ... + 6016.

Almost surely, 2^9920146 is an apocalyptic number.

9920146 is a deficient number, since it is larger than the sum of its proper divisors (6380294).

9920146 is a wasteful number, since it uses less digits than its factorization.

9920146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10109.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 9920146 is about 3149.6263270426. The cubic root of 9920146 is about 214.8684683137.

The spelling of 9920146 in words is "nine million, nine hundred twenty thousand, one hundred forty-six".