94491221 has 4 divisors (see below), whose sum is σ = 103081344. Its totient is φ = 85901100.

The previous prime is 94491169. The next prime is 94491259. The reversal of 94491221 is 12219449.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12219449 = 11 ⋅1110859.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-94491221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94491281) 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 3 ways as a sum of consecutive naturals, for example, 4295045 + ... + 4295066.

It is an arithmetic number, because the mean of its divisors is an integer number (25770336).

Almost surely, 2^94491221 is an apocalyptic number.

It is an amenable number.

94491221 is a deficient number, since it is larger than the sum of its proper divisors (8590123).

94491221 is a wasteful number, since it uses less digits than its factorization.

94491221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590122.

The product of its digits is 5184, while the sum is 32.

The square root of 94491221 is about 9720.6594940878. The cubic root of 94491221 is about 455.4742404691.

The spelling of 94491221 in words is "ninety-four million, four hundred ninety-one thousand, two hundred twenty-one".