85344397 has 2 divisors, whose sum is σ = 85344398. Its totient is φ = 85344396.

The previous prime is 85344323. The next prime is 85344431. The reversal of 85344397 is 79344358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54552996 + 30791401 = 7386^2 + 5549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85344397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85344317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42672198 + 42672199.

It is an arithmetic number, because the mean of its divisors is an integer number (42672199).

Almost surely, 2^85344397 is an apocalyptic number.

It is an amenable number.

85344397 is a deficient number, since it is larger than the sum of its proper divisors (1).

85344397 is an equidigital number, since it uses as much as digits as its factorization.

85344397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 43.

The square root of 85344397 is about 9238.2031261496. The cubic root of 85344397 is about 440.2759924796.

The spelling of 85344397 in words is "eighty-five million, three hundred forty-four thousand, three hundred ninety-seven".