86420904397 has 2 divisors, whose sum is σ = 86420904398. Its totient is φ = 86420904396.

The previous prime is 86420904391. The next prime is 86420904413. The reversal of 86420904397 is 79340902468.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44647267401 + 41773636996 = 211299^2 + 204386^2 .

It is a cyclic number.

It is not a de Polignac number, because 86420904397 - 2¹¹ = 86420902349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86420904391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43210452198 + 43210452199.

It is an arithmetic number, because the mean of its divisors is an integer number (43210452199).

Almost surely, 2^86420904397 is an apocalyptic number.

It is an amenable number.

86420904397 is a deficient number, since it is larger than the sum of its proper divisors (1).

86420904397 is an equidigital number, since it uses as much as digits as its factorization.

86420904397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 86420904397 in words is "eighty-six billion, four hundred twenty million, nine hundred four thousand, three hundred ninety-seven".