9100990 has 8 divisors (see below), whose sum is σ = 16381800. Its totient is φ = 3640392.

The previous prime is 9100969. The next prime is 9100991. The reversal of 9100990 is 990019.

9100990 is nontrivially palindromic in base 9.

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

9100990 is a modest number, since divided by 990 gives 910 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9100991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455040 + ... + 455059.

It is an arithmetic number, because the mean of its divisors is an integer number (2047725).

Almost surely, 2^9100990 is an apocalyptic number.

9100990 is a deficient number, since it is larger than the sum of its proper divisors (7280810).

9100990 is a wasteful number, since it uses less digits than its factorization.

9100990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910106.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 9100990 is about 3016.7847122392. The cubic root of 9100990 is about 208.7835185877.

The spelling of 9100990 in words is "nine million, one hundred thousand, nine hundred ninety".