94021091 has 4 divisors (see below), whose sum is σ = 96207672. Its totient is φ = 91834512.

The previous prime is 94021073. The next prime is 94021093. The reversal of 94021091 is 19012049.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94021091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 94021091.

It is not an unprimeable number, because it can be changed into a prime (94021093) 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, 1093226 + ... + 1093311.

It is an arithmetic number, because the mean of its divisors is an integer number (24051918).

Almost surely, 2^94021091 is an apocalyptic number.

94021091 is a deficient number, since it is larger than the sum of its proper divisors (2186581).

94021091 is a wasteful number, since it uses less digits than its factorization.

94021091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186580.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 94021091 is about 9696.4473391031. The cubic root of 94021091 is about 454.7175979753.

The spelling of 94021091 in words is "ninety-four million, twenty-one thousand, ninety-one".