86121073 has 2 divisors, whose sum is σ = 86121074. Its totient is φ = 86121072.

The previous prime is 86121059. The next prime is 86121107. The reversal of 86121073 is 37012168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67354849 + 18766224 = 8207^2 + 4332^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86121073 is a prime.

It is not a weakly prime, because it can be changed into another prime (86121043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43060536 + 43060537.

It is an arithmetic number, because the mean of its divisors is an integer number (43060537).

Almost surely, 2^86121073 is an apocalyptic number.

It is an amenable number.

86121073 is a deficient number, since it is larger than the sum of its proper divisors (1).

86121073 is an equidigital number, since it uses as much as digits as its factorization.

86121073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 86121073 is about 9280.1440182790. The cubic root of 86121073 is about 441.6075374187.

The spelling of 86121073 in words is "eighty-six million, one hundred twenty-one thousand, seventy-three".