10992891 has 32 divisors (see below), whose sum is σ = 18339328. Its totient is φ = 5702400.

The previous prime is 10992869. The next prime is 10992893. The reversal of 10992891 is 19829901.

It is a happy number.

It is not a de Polignac number, because 10992891 - 2⁷ = 10992763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (10992893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17991 + ... + 18591.

It is an arithmetic number, because the mean of its divisors is an integer number (573104).

Almost surely, 2^10992891 is an apocalyptic number.

10992891 is a deficient number, since it is larger than the sum of its proper divisors (7346437).

10992891 is a wasteful number, since it uses less digits than its factorization.

10992891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 10992891 is about 3315.5528950689. The cubic root of 10992891 is about 222.3500888096.

The spelling of 10992891 in words is "ten million, nine hundred ninety-two thousand, eight hundred ninety-one".