1099850897 has 4 divisors (see below), whose sum is σ = 1137776820. Its totient is φ = 1061924976.

The previous prime is 1099850881. The next prime is 1099850909. The reversal of 1099850897 is 7980589901.

It is a happy number.

It is a Cunningham number, because it is equal to 33164²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7980589901 = 3769 ⋅2117429.

It can be written as a sum of positive squares in 2 ways, for example, as 576768256 + 523082641 = 24016^2 + 22871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099850897 - 2⁴ = 1099850881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1099850827) 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, 18962918 + ... + 18962975.

It is an arithmetic number, because the mean of its divisors is an integer number (284444205).

Almost surely, 2^1099850897 is an apocalyptic number.

It is an amenable number.

1099850897 is a deficient number, since it is larger than the sum of its proper divisors (37925923).

1099850897 is an equidigital number, since it uses as much as digits as its factorization.

1099850897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37925922.

The product of its (nonzero) digits is 1632960, while the sum is 56.

The square root of 1099850897 is about 33164.0000150766. Note that the first 4 decimals coincide. The cubic root of 1099850897 is about 1032.2334721179.

The spelling of 1099850897 in words is "one billion, ninety-nine million, eight hundred fifty thousand, eight hundred ninety-seven".