10991849 has 16 divisors (see below), whose sum is σ = 12476160. Its totient is φ = 9596160.

The previous prime is 10991839. The next prime is 10991857. The reversal of 10991849 is 94819901.

It is a cyclic number.

It is not a de Polignac number, because 10991849 - 2⁴ = 10991833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10991839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45872 + ... + 46110.

It is an arithmetic number, because the mean of its divisors is an integer number (779760).

Almost surely, 2^10991849 is an apocalyptic number.

It is an amenable number.

10991849 is a deficient number, since it is larger than the sum of its proper divisors (1484311).

10991849 is a wasteful number, since it uses less digits than its factorization.

10991849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400.

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 10991849 is about 3315.3957531492. The cubic root of 10991849 is about 222.3430631748.

The spelling of 10991849 in words is "ten million, nine hundred ninety-one thousand, eight hundred forty-nine".