11800445 has 4 divisors (see below), whose sum is σ = 14160540. Its totient is φ = 9440352.

The previous prime is 11800441. The next prime is 11800457. The reversal of 11800445 is 54400811.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8797156 + 3003289 = 2966^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 11800445 - 2² = 11800441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11800445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11800441) 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, 1180040 + ... + 1180049.

It is an arithmetic number, because the mean of its divisors is an integer number (3540135).

Almost surely, 2^11800445 is an apocalyptic number.

It is an amenable number.

11800445 is a deficient number, since it is larger than the sum of its proper divisors (2360095).

11800445 is an equidigital number, since it uses as much as digits as its factorization.

11800445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2360094.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 11800445 is about 3435.1775791071. The cubic root of 11800445 is about 227.6666733359. Note that the first 4 decimals are identical.

The spelling of 11800445 in words is "eleven million, eight hundred thousand, four hundred forty-five".