1099399924 has 12 divisors (see below), whose sum is σ = 2198799904. Its totient is φ = 471171384.

The previous prime is 1099399919. The next prime is 1099399943. The reversal of 1099399924 is 4299939901.

1099399924 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19632114 + ... + 19632169.

Almost surely, 2^1099399924 is an apocalyptic number.

1099399924 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1099399924 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1099399924 is a wasteful number, since it uses less digits than its factorization.

1099399924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39264294 (or 39264292 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 55.

The square root of 1099399924 is about 33157.2001833689. The cubic root of 1099399924 is about 1032.0923702450.

The spelling of 1099399924 in words is "one billion, ninety-nine million, three hundred ninety-nine thousand, nine hundred twenty-four".