9990541 has 8 divisors (see below), whose sum is σ = 10922400. Its totient is φ = 9062640.

The previous prime is 9990499. The next prime is 9990551. The reversal of 9990541 is 1450999.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9990541 is a prime.

It is an Ulam number.

It is a Duffinian number.

9990541 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9990541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990551) 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 7 ways as a sum of consecutive naturals, for example, 7515 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (1365300).

Almost surely, 2^9990541 is an apocalyptic number.

It is an amenable number.

9990541 is a deficient number, since it is larger than the sum of its proper divisors (931859).

9990541 is a wasteful number, since it uses less digits than its factorization.

9990541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 14580, while the sum is 37.

The square root of 9990541 is about 3160.7817071098. The cubic root of 9990541 is about 215.3755182480.

The spelling of 9990541 in words is "nine million, nine hundred ninety thousand, five hundred forty-one".