1099890011 has 4 divisors (see below), whose sum is σ = 1199880024. Its totient is φ = 999900000.

The previous prime is 1099890007. The next prime is 1099890037. The reversal of 1099890011 is 1100989901.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1099890011 - 2² = 1099890007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099890041) 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, 49994990 + ... + 49995011.

It is an arithmetic number, because the mean of its divisors is an integer number (299970006).

Almost surely, 2^1099890011 is an apocalyptic number.

1099890011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1099890011 is a deficient number, since it is larger than the sum of its proper divisors (99990013).

1099890011 is an equidigital number, since it uses as much as digits as its factorization.

1099890011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99990012.

The product of its (nonzero) digits is 5832, while the sum is 38.

The square root of 1099890011 is about 33164.5897155385. The cubic root of 1099890011 is about 1032.2457084133.

The spelling of 1099890011 in words is "one billion, ninety-nine million, eight hundred ninety thousand, eleven".