9909057 has 16 divisors (see below), whose sum is σ = 13934592. Its totient is φ = 6254160.

The previous prime is 9909047. The next prime is 9909061. The reversal of 9909057 is 7509099.

It is not a de Polignac number, because 9909057 - 2¹⁰ = 9908033 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9909017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3238 + ... + 5504.

It is an arithmetic number, because the mean of its divisors is an integer number (870912).

Almost surely, 2^9909057 is an apocalyptic number.

It is an amenable number.

9909057 is a deficient number, since it is larger than the sum of its proper divisors (4025535).

9909057 is a wasteful number, since it uses less digits than its factorization.

9909057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348.

The product of its (nonzero) digits is 25515, while the sum is 39.

The square root of 9909057 is about 3147.8654672651. The cubic root of 9909057 is about 214.7883765891.

The spelling of 9909057 in words is "nine million, nine hundred nine thousand, fifty-seven".