9888490 has 8 divisors (see below), whose sum is σ = 17799300. Its totient is φ = 3955392.

The previous prime is 9888481. The next prime is 9888499. The reversal of 9888490 is 948889.

It is an interprime number because it is at equal distance from previous prime (9888481) and next prime (9888499).

It can be written as a sum of positive squares in 2 ways, for example, as 8874441 + 1014049 = 2979^2 + 1007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9888490.

It is not an unprimeable number, because it can be changed into a prime (9888499) 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 3 ways as a sum of consecutive naturals, for example, 494415 + ... + 494434.

Almost surely, 2^9888490 is an apocalyptic number.

9888490 is a deficient number, since it is larger than the sum of its proper divisors (7910810).

9888490 is a wasteful number, since it uses less digits than its factorization.

9888490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988856.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 9888490 is about 3144.5969535061. The cubic root of 9888490 is about 214.6396704646.

It can be divided in two parts, 98 and 88490, that added together give a palindrome (88588).

The spelling of 9888490 in words is "nine million, eight hundred eighty-eight thousand, four hundred ninety".