93139221 has 32 divisors (see below), whose sum is σ = 147529728. Its totient is φ = 51145920.

The previous prime is 93139217. The next prime is 93139231. The reversal of 93139221 is 12293139.

It is a happy number.

It is not a de Polignac number, because 93139221 - 2² = 93139217 is a prime.

It is a super-3 number, since 3×93139221³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93139201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112210 + ... + 113036.

It is an arithmetic number, because the mean of its divisors is an integer number (4610304).

Almost surely, 2^93139221 is an apocalyptic number.

It is an amenable number.

93139221 is a deficient number, since it is larger than the sum of its proper divisors (54390507).

93139221 is a wasteful number, since it uses less digits than its factorization.

93139221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its digits is 2916, while the sum is 30.

The square root of 93139221 is about 9650.8663341692. The cubic root of 93139221 is about 453.2914565676.

The spelling of 93139221 in words is "ninety-three million, one hundred thirty-nine thousand, two hundred twenty-one".