9940990 has 16 divisors (see below), whose sum is σ = 18835920. Its totient is φ = 3767040.

The previous prime is 9940963. The next prime is 9941003. The reversal of 9940990 is 990499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25971 + ... + 26350.

It is an arithmetic number, because the mean of its divisors is an integer number (1177245).

Almost surely, 2^9940990 is an apocalyptic number.

9940990 is a deficient number, since it is larger than the sum of its proper divisors (8894930).

9940990 is a wasteful number, since it uses less digits than its factorization.

9940990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52347.

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

The square root of 9940990 is about 3152.9335546440. The cubic root of 9940990 is about 215.0188553862.

It can be divided in two parts, 99409 and 90, that added together give a palindrome (99499).

The spelling of 9940990 in words is "nine million, nine hundred forty thousand, nine hundred ninety".