85403797 has 2 divisors, whose sum is σ = 85403798. Its totient is φ = 85403796.

The previous prime is 85403771. The next prime is 85403827. The reversal of 85403797 is 79730458.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55219761 + 30184036 = 7431^2 + 5494^2 .

It is a cyclic number.

It is not a de Polignac number, because 85403797 - 2¹¹ = 85401749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85403497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42701898 + 42701899.

It is an arithmetic number, because the mean of its divisors is an integer number (42701899).

Almost surely, 2^85403797 is an apocalyptic number.

It is an amenable number.

85403797 is a deficient number, since it is larger than the sum of its proper divisors (1).

85403797 is an equidigital number, since it uses as much as digits as its factorization.

85403797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 85403797 is about 9241.4174778548. The cubic root of 85403797 is about 440.3781133367.

The spelling of 85403797 in words is "eighty-five million, four hundred three thousand, seven hundred ninety-seven".