93709221 has 8 divisors (see below), whose sum is σ = 125220864. Its totient is φ = 62335200.

The previous prime is 93709207. The next prime is 93709223. The reversal of 93709221 is 12290739.

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

It is a de Polignac number, because none of the positive numbers 2^k-93709221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93709223) 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, 32805 + ... + 35546.

It is an arithmetic number, because the mean of its divisors is an integer number (15652608).

Almost surely, 2^93709221 is an apocalyptic number.

It is an amenable number.

93709221 is a deficient number, since it is larger than the sum of its proper divisors (31511643).

93709221 is a wasteful number, since it uses less digits than its factorization.

93709221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68811.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 93709221 is about 9680.3523179686. The cubic root of 93709221 is about 454.2142716683.

The spelling of 93709221 in words is "ninety-three million, seven hundred nine thousand, two hundred twenty-one".