9909490 has 16 divisors (see below), whose sum is σ = 17917848. Its totient is φ = 3945856.

The previous prime is 9909461. The next prime is 9909499. The reversal of 9909490 is 949099.

It can be written as a sum of positive squares in 4 ways, for example, as 4297329 + 5612161 = 2073^2 + 2369^2 .

It is not an unprimeable number, because it can be changed into a prime (9909499) 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, 204 + ... + 4456.

Almost surely, 2^9909490 is an apocalyptic number.

9909490 is a deficient number, since it is larger than the sum of its proper divisors (8008358).

9909490 is a wasteful number, since it uses less digits than its factorization.

9909490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493.

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 9909490 is about 3147.9342432776. The cubic root of 9909490 is about 214.7915051079.

The spelling of 9909490 in words is "nine million, nine hundred nine thousand, four hundred ninety".