1108796921 has 4 divisors (see below), whose sum is σ = 1110739344. Its totient is φ = 1106854500.

The previous prime is 1108796911. The next prime is 1108796951. The reversal of 1108796921 is 1296978011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1108796921 - 2²² = 1104602617 is a prime.

It is a super-2 number, since 2×1108796921² = 2458861224038160482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1108796911) 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, 970355 + ... + 971496.

It is an arithmetic number, because the mean of its divisors is an integer number (277684836).

Almost surely, 2^1108796921 is an apocalyptic number.

It is an amenable number.

1108796921 is a deficient number, since it is larger than the sum of its proper divisors (1942423).

1108796921 is an equidigital number, since it uses as much as digits as its factorization.

1108796921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942422.

The product of its (nonzero) digits is 54432, while the sum is 44.

The square root of 1108796921 is about 33298.6023880883. The cubic root of 1108796921 is about 1035.0245961778.

The spelling of 1108796921 in words is "one billion, one hundred eight million, seven hundred ninety-six thousand, nine hundred twenty-one".