83381579 has 2 divisors, whose sum is σ = 83381580. Its totient is φ = 83381578.

The previous prime is 83381563. The next prime is 83381591. The reversal of 83381579 is 97518338.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83381579 - 2⁴ = 83381563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83381479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41690789 + 41690790.

It is an arithmetic number, because the mean of its divisors is an integer number (41690790).

Almost surely, 2^83381579 is an apocalyptic number.

83381579 is a deficient number, since it is larger than the sum of its proper divisors (1).

83381579 is an equidigital number, since it uses as much as digits as its factorization.

83381579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 83381579 is about 9131.3514333860. The cubic root of 83381579 is about 436.8745090501.

The spelling of 83381579 in words is "eighty-three million, three hundred eighty-one thousand, five hundred seventy-nine".