85788029 has 2 divisors, whose sum is σ = 85788030. Its totient is φ = 85788028.

The previous prime is 85788023. The next prime is 85788049. The reversal of 85788029 is 92088758.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82264900 + 3523129 = 9070^2 + 1877^2 .

It is a cyclic number.

It is not a de Polignac number, because 85788029 - 2¹⁶ = 85722493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85788023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42894014 + 42894015.

It is an arithmetic number, because the mean of its divisors is an integer number (42894015).

Almost surely, 2^85788029 is an apocalyptic number.

It is an amenable number.

85788029 is a deficient number, since it is larger than the sum of its proper divisors (1).

85788029 is an equidigital number, since it uses as much as digits as its factorization.

85788029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 85788029 is about 9262.1827341075. The cubic root of 85788029 is about 441.0375463154.

The spelling of 85788029 in words is "eighty-five million, seven hundred eighty-eight thousand, twenty-nine".