109009992 has 256 divisors, whose sum is σ = 367718400. Its totient is φ = 26127360.

The previous prime is 109009969. The next prime is 109010017. The reversal of 109009992 is 299900901.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 109009992.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1535317 + ... + 1535387.

It is an arithmetic number, because the mean of its divisors is an integer number (1436400).

Almost surely, 2^109009992 is an apocalyptic number.

109009992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 109009992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183859200).

109009992 is an abundant number, since it is smaller than the sum of its proper divisors (258708408).

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

109009992 is a wasteful number, since it uses less digits than its factorization.

109009992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 39.

The square root of 109009992 is about 10440.7850279565. The cubic root of 109009992 is about 477.7002140939.

The spelling of 109009992 in words is "one hundred nine million, nine thousand, nine hundred ninety-two".