85237393 has 2 divisors, whose sum is σ = 85237394. Its totient is φ = 85237392.

The previous prime is 85237357. The next prime is 85237423. The reversal of 85237393 is 39373258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85229824 + 7569 = 9232^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 85237393 - 2⁹ = 85236881 is a prime.

It is not a weakly prime, because it can be changed into another prime (85237093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42618696 + 42618697.

It is an arithmetic number, because the mean of its divisors is an integer number (42618697).

Almost surely, 2^85237393 is an apocalyptic number.

It is an amenable number.

85237393 is a deficient number, since it is larger than the sum of its proper divisors (1).

85237393 is an equidigital number, since it uses as much as digits as its factorization.

85237393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 40.

The square root of 85237393 is about 9232.4099237415. The cubic root of 85237393 is about 440.0919108960.

The spelling of 85237393 in words is "eighty-five million, two hundred thirty-seven thousand, three hundred ninety-three".