85757429 has 2 divisors, whose sum is σ = 85757430. Its totient is φ = 85757428.

The previous prime is 85757411. The next prime is 85757443. The reversal of 85757429 is 92475758.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44823025 + 40934404 = 6695^2 + 6398^2 .

It is a cyclic number.

It is not a de Polignac number, because 85757429 - 2²⁰ = 84708853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85757489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42878714 + 42878715.

It is an arithmetic number, because the mean of its divisors is an integer number (42878715).

Almost surely, 2^85757429 is an apocalyptic number.

It is an amenable number.

85757429 is a deficient number, since it is larger than the sum of its proper divisors (1).

85757429 is an equidigital number, since it uses as much as digits as its factorization.

85757429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 47.

The square root of 85757429 is about 9260.5307083342. The cubic root of 85757429 is about 440.9851017261.

The spelling of 85757429 in words is "eighty-five million, seven hundred fifty-seven thousand, four hundred twenty-nine".