109291216 has 20 divisors (see below), whose sum is σ = 220959072. Its totient is φ = 52269536.

The previous prime is 109291177. The next prime is 109291219. The reversal of 109291216 is 612192901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109291219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148126 + ... + 148861.

Almost surely, 2^109291216 is an apocalyptic number.

109291216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

109291216 is an abundant number, since it is smaller than the sum of its proper divisors (111667856).

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

109291216 is a wasteful number, since it uses less digits than its factorization.

109291216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297018 (or 297012 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 109291216 is about 10454.2439229243. The cubic root of 109291216 is about 478.1106517175.

The spelling of 109291216 in words is "one hundred nine million, two hundred ninety-one thousand, two hundred sixteen".