85622429 has 2 divisors, whose sum is σ = 85622430. Its totient is φ = 85622428.

The previous prime is 85622423. The next prime is 85622437. The reversal of 85622429 is 92422658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79619929 + 6002500 = 8923^2 + 2450^2 .

It is a cyclic number.

It is not a de Polignac number, because 85622429 - 2²⁴ = 68845213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85622392 and 85622401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85622423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42811214 + 42811215.

It is an arithmetic number, because the mean of its divisors is an integer number (42811215).

Almost surely, 2^85622429 is an apocalyptic number.

It is an amenable number.

85622429 is a deficient number, since it is larger than the sum of its proper divisors (1).

85622429 is an equidigital number, since it uses as much as digits as its factorization.

85622429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 85622429 is about 9253.2388383744. The cubic root of 85622429 is about 440.7535794899.

The spelling of 85622429 in words is "eighty-five million, six hundred twenty-two thousand, four hundred twenty-nine".