85276391 has 2 divisors, whose sum is σ = 85276392. Its totient is φ = 85276390.

The previous prime is 85276363. The next prime is 85276423. The reversal of 85276391 is 19367258.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85276391 - 2¹⁸ = 85014247 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85276991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42638195 + 42638196.

It is an arithmetic number, because the mean of its divisors is an integer number (42638196).

Almost surely, 2^85276391 is an apocalyptic number.

85276391 is a deficient number, since it is larger than the sum of its proper divisors (1).

85276391 is an equidigital number, since it uses as much as digits as its factorization.

85276391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 85276391 is about 9234.5216984964. The cubic root of 85276391 is about 440.1590179365.

The spelling of 85276391 in words is "eighty-five million, two hundred seventy-six thousand, three hundred ninety-one".