93140221 has 4 divisors (see below), whose sum is σ = 93613212. Its totient is φ = 92667232.

The previous prime is 93140219. The next prime is 93140231. The reversal of 93140221 is 12204139.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84437721 + 8702500 = 9189^2 + 2950^2 .

It is a cyclic number.

It is not a de Polignac number, because 93140221 - 2¹ = 93140219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 93140192 and 93140201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (93140231) 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, 236200 + ... + 236593.

It is an arithmetic number, because the mean of its divisors is an integer number (23403303).

Almost surely, 2^93140221 is an apocalyptic number.

It is an amenable number.

93140221 is a deficient number, since it is larger than the sum of its proper divisors (472991).

93140221 is a wasteful number, since it uses less digits than its factorization.

93140221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472990.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 93140221 is about 9650.9181428505. The cubic root of 93140221 is about 453.2930788338.

The spelling of 93140221 in words is "ninety-three million, one hundred forty thousand, two hundred twenty-one".