1099247409 has 32 divisors (see below), whose sum is σ = 1755801600. Its totient is φ = 675682560.

The previous prime is 1099247381. The next prime is 1099247411. The reversal of 1099247409 is 9047429901.

It is a happy number.

It is not a de Polignac number, because 1099247409 - 2⁵ = 1099247377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1099247449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 515257 + ... + 517385.

It is an arithmetic number, because the mean of its divisors is an integer number (54868800).

Almost surely, 2^1099247409 is an apocalyptic number.

It is an amenable number.

1099247409 is a deficient number, since it is larger than the sum of its proper divisors (656554191).

1099247409 is a wasteful number, since it uses less digits than its factorization.

1099247409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3616 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1099247409 is about 33154.9002260601. The cubic root of 1099247409 is about 1032.0446421332.

The spelling of 1099247409 in words is "one billion, ninety-nine million, two hundred forty-seven thousand, four hundred nine".