83257379 has 2 divisors, whose sum is σ = 83257380. Its totient is φ = 83257378.

The previous prime is 83257333. The next prime is 83257387. The reversal of 83257379 is 97375238.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83257379 - 2¹² = 83253283 is a prime.

It is not a weakly prime, because it can be changed into another prime (83257679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41628689 + 41628690.

It is an arithmetic number, because the mean of its divisors is an integer number (41628690).

Almost surely, 2^83257379 is an apocalyptic number.

83257379 is a deficient number, since it is larger than the sum of its proper divisors (1).

83257379 is an equidigital number, since it uses as much as digits as its factorization.

83257379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 83257379 is about 9124.5481531964. The cubic root of 83257379 is about 436.6574875862.

The spelling of 83257379 in words is "eighty-three million, two hundred fifty-seven thousand, three hundred seventy-nine".