100109091 has 8 divisors (see below), whose sum is σ = 134011584. Its totient is φ = 66473000.

The previous prime is 100109089. The next prime is 100109101. The reversal of 100109091 is 190901001.

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 100109091 - 2¹ = 100109089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100109071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65721 + ... + 67226.

It is an arithmetic number, because the mean of its divisors is an integer number (16751448).

Almost surely, 2^100109091 is an apocalyptic number.

100109091 is a deficient number, since it is larger than the sum of its proper divisors (33902493).

100109091 is a wasteful number, since it uses less digits than its factorization.

100109091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133201.

The product of its (nonzero) digits is 81, while the sum is 21.

The square root of 100109091 is about 10005.4530632051. The cubic root of 100109091 is about 464.3276072111.

The spelling of 100109091 in words is "one hundred million, one hundred nine thousand, ninety-one".