76243393 has 2 divisors, whose sum is σ = 76243394. Its totient is φ = 76243392.

The previous prime is 76243339. The next prime is 76243397. The reversal of 76243393 is 39334267.

Together with previous prime (76243339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57032704 + 19210689 = 7552^2 + 4383^2 .

It is a cyclic number.

It is not a de Polignac number, because 76243393 - 2¹⁷ = 76112321 is a prime.

It is not a weakly prime, because it can be changed into another prime (76243397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38121696 + 38121697.

It is an arithmetic number, because the mean of its divisors is an integer number (38121697).

Almost surely, 2^76243393 is an apocalyptic number.

It is an amenable number.

76243393 is a deficient number, since it is larger than the sum of its proper divisors (1).

76243393 is an equidigital number, since it uses as much as digits as its factorization.

76243393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 37.

The square root of 76243393 is about 8731.7462743715. The cubic root of 76243393 is about 424.0340563157.

It can be divided in two parts, 76243 and 393, that added together give a triangular number (76636 = T₃₉₁).

The spelling of 76243393 in words is "seventy-six million, two hundred forty-three thousand, three hundred ninety-three".