109291091 has 8 divisors (see below), whose sum is σ = 134512224. Its totient is φ = 86472000.

The previous prime is 109291087. The next prime is 109291099. The reversal of 109291091 is 190192901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109291091 - 2² = 109291087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109291099) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 600410 + ... + 600591.

It is an arithmetic number, because the mean of its divisors is an integer number (16814028).

Almost surely, 2^109291091 is an apocalyptic number.

109291091 is a deficient number, since it is larger than the sum of its proper divisors (25221133).

109291091 is a wasteful number, since it uses less digits than its factorization.

109291091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201021.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 109291091 is about 10454.2379444893. The cubic root of 109291091 is about 478.1104694404.

The spelling of 109291091 in words is "one hundred nine million, two hundred ninety-one thousand, ninety-one".