93820213 has 4 divisors (see below), whose sum is σ = 94749228. Its totient is φ = 92891200.

The previous prime is 93820211. The next prime is 93820219. The reversal of 93820213 is 31202839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31202839 = 101 ⋅308939.

It can be written as a sum of positive squares in 2 ways, for example, as 51022449 + 42797764 = 7143^2 + 6542^2 .

It is a cyclic number.

It is not a de Polignac number, because 93820213 - 2¹ = 93820211 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 (93820211) 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, 464356 + ... + 464557.

It is an arithmetic number, because the mean of its divisors is an integer number (23687307).

Almost surely, 2^93820213 is an apocalyptic number.

It is an amenable number.

93820213 is a deficient number, since it is larger than the sum of its proper divisors (929015).

93820213 is a wasteful number, since it uses less digits than its factorization.

93820213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929014.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 93820213 is about 9686.0834706294. The cubic root of 93820213 is about 454.3935292304.

The spelling of 93820213 in words is "ninety-three million, eight hundred twenty thousand, two hundred thirteen".