1099423880 has 16 divisors (see below), whose sum is σ = 2473703820. Its totient is φ = 439769536.

The previous prime is 1099423861. The next prime is 1099423889. The reversal of 1099423880 is 883249901.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1054560676 + 44863204 = 32474^2 + 6698^2 .

It is not an unprimeable number, because it can be changed into a prime (1099423889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13742759 + ... + 13742838.

Almost surely, 2^1099423880 is an apocalyptic number.

1099423880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1099423880 is an abundant number, since it is smaller than the sum of its proper divisors (1374279940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099423880 is a wasteful number, since it uses less digits than its factorization.

1099423880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27485608 (or 27485604 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1099423880 is about 33157.5614302379. The cubic root of 1099423880 is about 1032.0998666451.

The spelling of 1099423880 in words is "one billion, ninety-nine million, four hundred twenty-three thousand, eight hundred eighty".