83220493 has 2 divisors, whose sum is σ = 83220494. Its totient is φ = 83220492.

The previous prime is 83220451. The next prime is 83220521. The reversal of 83220493 is 39402238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73222249 + 9998244 = 8557^2 + 3162^2 .

It is a cyclic number.

It is not a de Polignac number, because 83220493 - 2¹³ = 83212301 is a prime.

It is equal to p_4846306 and since 83220493 and 4846306 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83220413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41610246 + 41610247.

It is an arithmetic number, because the mean of its divisors is an integer number (41610247).

Almost surely, 2^83220493 is an apocalyptic number.

It is an amenable number.

83220493 is a deficient number, since it is larger than the sum of its proper divisors (1).

83220493 is an equidigital number, since it uses as much as digits as its factorization.

83220493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 83220493 is about 9122.5266785031. The cubic root of 83220493 is about 436.5929930935.

The spelling of 83220493 in words is "eighty-three million, two hundred twenty thousand, four hundred ninety-three".