86999929 has 2 divisors, whose sum is σ = 86999930. Its totient is φ = 86999928.

The previous prime is 86999923. The next prime is 86999947. The reversal of 86999929 is 92999968.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63234304 + 23765625 = 7952^2 + 4875^2 .

It is a cyclic number.

It is not a de Polignac number, because 86999929 - 2¹⁷ = 86868857 is a prime.

It is not a weakly prime, because it can be changed into another prime (86999923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43499964 + 43499965.

It is an arithmetic number, because the mean of its divisors is an integer number (43499965).

Almost surely, 2^86999929 is an apocalyptic number.

It is an amenable number.

86999929 is a deficient number, since it is larger than the sum of its proper divisors (1).

86999929 is an equidigital number, since it uses as much as digits as its factorization.

86999929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5668704, while the sum is 61.

The square root of 86999929 is about 9327.3752470885. The cubic root of 86999929 is about 443.1046416313.

The spelling of 86999929 in words is "eighty-six million, nine hundred ninety-nine thousand, nine hundred twenty-nine".