109991304 has 64 divisors (see below), whose sum is σ = 321624000. Its totient is φ = 34732800.

The previous prime is 109991303. The next prime is 109991339. The reversal of 109991304 is 403199901.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (109991303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9297 + ... + 17504.

It is an arithmetic number, because the mean of its divisors is an integer number (5025375).

Almost surely, 2^109991304 is an apocalyptic number.

It is an amenable number.

109991304 is an abundant number, since it is smaller than the sum of its proper divisors (211632696).

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

109991304 is a wasteful number, since it uses less digits than its factorization.

109991304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26835 (or 26825 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 109991304 is about 10487.6739079741. The cubic root of 109991304 is about 479.1293592563.

The spelling of 109991304 in words is "one hundred nine million, nine hundred ninety-one thousand, three hundred four".