100912091 has 8 divisors (see below), whose sum is σ = 116387040. Its totient is φ = 85701888.

The previous prime is 100912081. The next prime is 100912103. The reversal of 100912091 is 190219001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100912091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100912001) 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, 65366 + ... + 66891.

It is an arithmetic number, because the mean of its divisors is an integer number (14548380).

Almost surely, 2^100912091 is an apocalyptic number.

100912091 is a deficient number, since it is larger than the sum of its proper divisors (15474949).

100912091 is a wasteful number, since it uses less digits than its factorization.

100912091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132373.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 100912091 is about 10045.5010328007. The cubic root of 100912091 is about 465.5657983438.

The spelling of 100912091 in words is "one hundred million, nine hundred twelve thousand, ninety-one".