109555992 has 192 divisors, whose sum is σ = 381588480. Its totient is φ = 27599616.

The previous prime is 109555951. The next prime is 109556017. The reversal of 109555992 is 299555901.

109555992 is a `hidden beast` number, since 1 + 0 + 9 + 5 + 559 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 150333 + ... + 151059.

It is an arithmetic number, because the mean of its divisors is an integer number (1987440).

Almost surely, 2^109555992 is an apocalyptic number.

109555992 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 109555992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190794240).

109555992 is an abundant number, since it is smaller than the sum of its proper divisors (272032488).

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

109555992 is a wasteful number, since it uses less digits than its factorization.

109555992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 182250, while the sum is 45.

The square root of 109555992 is about 10466.8998275516. The cubic root of 109555992 is about 478.4964409807.

The spelling of 109555992 in words is "one hundred nine million, five hundred fifty-five thousand, nine hundred ninety-two".