10989091 has 4 divisors (see below), whose sum is σ = 11041384. Its totient is φ = 10936800.

The previous prime is 10989079. The next prime is 10989109. The reversal of 10989091 is 19098901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19098901 = 23 ⋅830387.

It is a cyclic number.

It is not a de Polignac number, because 10989091 - 2⁵ = 10989059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10989091.

It is not an unprimeable number, because it can be changed into a prime (10989001) 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, 25830 + ... + 26251.

It is an arithmetic number, because the mean of its divisors is an integer number (2760346).

Almost surely, 2^10989091 is an apocalyptic number.

10989091 is a deficient number, since it is larger than the sum of its proper divisors (52293).

10989091 is an equidigital number, since it uses as much as digits as its factorization.

10989091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52292.

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 10989091 is about 3314.9797887770. The cubic root of 10989091 is about 222.3244653495.

The spelling of 10989091 in words is "ten million, nine hundred eighty-nine thousand, ninety-one".