86840797 has 2 divisors, whose sum is σ = 86840798. Its totient is φ = 86840796.

The previous prime is 86840753. The next prime is 86840833. The reversal of 86840797 is 79704868.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67996516 + 18844281 = 8246^2 + 4341^2 .

It is a cyclic number.

It is not a de Polignac number, because 86840797 - 2⁷ = 86840669 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86840797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86840717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43420398 + 43420399.

It is an arithmetic number, because the mean of its divisors is an integer number (43420399).

Almost surely, 2^86840797 is an apocalyptic number.

It is an amenable number.

86840797 is a deficient number, since it is larger than the sum of its proper divisors (1).

86840797 is an equidigital number, since it uses as much as digits as its factorization.

86840797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 86840797 is about 9318.8409687042. The cubic root of 86840797 is about 442.8343151159.

The spelling of 86840797 in words is "eighty-six million, eight hundred forty thousand, seven hundred ninety-seven".