85307149 has 2 divisors, whose sum is σ = 85307150. Its totient is φ = 85307148.

The previous prime is 85307129. The next prime is 85307153. The reversal of 85307149 is 94170358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82355625 + 2951524 = 9075^2 + 1718^2 .

It is a cyclic number.

It is not a de Polignac number, because 85307149 - 2¹³ = 85298957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85307129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42653574 + 42653575.

It is an arithmetic number, because the mean of its divisors is an integer number (42653575).

Almost surely, 2^85307149 is an apocalyptic number.

It is an amenable number.

85307149 is a deficient number, since it is larger than the sum of its proper divisors (1).

85307149 is an equidigital number, since it uses as much as digits as its factorization.

85307149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 85307149 is about 9236.1869296805. The cubic root of 85307149 is about 440.2119313065.

The spelling of 85307149 in words is "eighty-five million, three hundred seven thousand, one hundred forty-nine".