1100099405 has 4 divisors (see below), whose sum is σ = 1320119292. Its totient is φ = 880079520.

The previous prime is 1100099389. The next prime is 1100099419. The reversal of 1100099405 is 5049900011.

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 774008041 + 326091364 = 27821^2 + 18058^2 .

It is not a de Polignac number, because 1100099405 - 2⁴ = 1100099389 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110009936 + ... + 110009945.

It is an arithmetic number, because the mean of its divisors is an integer number (330029823).

Almost surely, 2^1100099405 is an apocalyptic number.

It is an amenable number.

1100099405 is a deficient number, since it is larger than the sum of its proper divisors (220019887).

1100099405 is an equidigital number, since it uses as much as digits as its factorization.

1100099405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220019886.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 1100099405 is about 33167.7464564598. The cubic root of 1100099405 is about 1032.3112096121.

Adding to 1100099405 its reverse (5049900011), we get a palindrome (6149999416).

The spelling of 1100099405 in words is "one billion, one hundred million, ninety-nine thousand, four hundred five".