121964091 has 8 divisors (see below), whose sum is σ = 162670080. Its totient is φ = 81283752.

The previous prime is 121964027. The next prime is 121964131. The reversal of 121964091 is 190469121.

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

It is not a de Polignac number, because 121964091 - 2⁶ = 121964027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121964291) 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, 13690 + ... + 20768.

It is an arithmetic number, because the mean of its divisors is an integer number (20333760).

Almost surely, 2^121964091 is an apocalyptic number.

121964091 is a deficient number, since it is larger than the sum of its proper divisors (40705989).

121964091 is an equidigital number, since it uses as much as digits as its factorization.

121964091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12825.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 121964091 is about 11043.7353735047. The cubic root of 121964091 is about 495.9189012286.

The spelling of 121964091 in words is "one hundred twenty-one million, nine hundred sixty-four thousand, ninety-one".