85394149 has 2 divisors, whose sum is σ = 85394150. Its totient is φ = 85394148.

The previous prime is 85394143. The next prime is 85394167. The reversal of 85394149 is 94149358.

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., 65901924 + 19492225 = 8118^2 + 4415^2 .

It is a cyclic number.

It is not a de Polignac number, because 85394149 - 2¹¹ = 85392101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85394143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42697074 + 42697075.

It is an arithmetic number, because the mean of its divisors is an integer number (42697075).

Almost surely, 2^85394149 is an apocalyptic number.

It is an amenable number.

85394149 is a deficient number, since it is larger than the sum of its proper divisors (1).

85394149 is an equidigital number, since it uses as much as digits as its factorization.

85394149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 43.

The square root of 85394149 is about 9240.8954652674. The cubic root of 85394149 is about 440.3615296554.

The spelling of 85394149 in words is "eighty-five million, three hundred ninety-four thousand, one hundred forty-nine".