85813379 has 2 divisors, whose sum is σ = 85813380. Its totient is φ = 85813378.

The previous prime is 85813373. The next prime is 85813537. The reversal of 85813379 is 97331858.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85813379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (85813373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42906689 + 42906690.

It is an arithmetic number, because the mean of its divisors is an integer number (42906690).

Almost surely, 2^85813379 is an apocalyptic number.

85813379 is a deficient number, since it is larger than the sum of its proper divisors (1).

85813379 is an equidigital number, since it uses as much as digits as its factorization.

85813379 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 85813379 is about 9263.5511009548. The cubic root of 85813379 is about 441.0809836141.

The spelling of 85813379 in words is "eighty-five million, eight hundred thirteen thousand, three hundred seventy-nine".