85373149 has 2 divisors, whose sum is σ = 85373150. Its totient is φ = 85373148.

The previous prime is 85373143. The next prime is 85373203. The reversal of 85373149 is 94137358.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44796249 + 40576900 = 6693^2 + 6370^2 .

It is a cyclic number.

It is not a de Polignac number, because 85373149 - 2⁷ = 85373021 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 (85373143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42686574 + 42686575.

It is an arithmetic number, because the mean of its divisors is an integer number (42686575).

Almost surely, 2^85373149 is an apocalyptic number.

It is an amenable number.

85373149 is a deficient number, since it is larger than the sum of its proper divisors (1).

85373149 is an equidigital number, since it uses as much as digits as its factorization.

85373149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 85373149 is about 9239.7591418824. The cubic root of 85373149 is about 440.3254290155.

The spelling of 85373149 in words is "eighty-five million, three hundred seventy-three thousand, one hundred forty-nine".