86194429 has 2 divisors, whose sum is σ = 86194430. Its totient is φ = 86194428.

The previous prime is 86194411. The next prime is 86194499. The reversal of 86194429 is 92449168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82391929 + 3802500 = 9077^2 + 1950^2 .

It is a cyclic number.

It is not a de Polignac number, because 86194429 - 2¹³ = 86186237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86194499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43097214 + 43097215.

It is an arithmetic number, because the mean of its divisors is an integer number (43097215).

Almost surely, 2^86194429 is an apocalyptic number.

It is an amenable number.

86194429 is a deficient number, since it is larger than the sum of its proper divisors (1).

86194429 is an equidigital number, since it uses as much as digits as its factorization.

86194429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 86194429 is about 9284.0954863681. The cubic root of 86194429 is about 441.7328856372.

The spelling of 86194429 in words is "eighty-six million, one hundred ninety-four thousand, four hundred twenty-nine".