85324249949 has 2 divisors, whose sum is σ = 85324249950. Its totient is φ = 85324249948.

The previous prime is 85324249921. The next prime is 85324249951. The reversal of 85324249949 is 94994242358.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85311894724 + 12355225 = 292082^2 + 3515^2 .

It is a cyclic number.

It is not a de Polignac number, because 85324249949 - 2²⁰ = 85323201373 is a prime.

Together with 85324249951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85324249919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42662124974 + 42662124975.

It is an arithmetic number, because the mean of its divisors is an integer number (42662124975).

Almost surely, 2^85324249949 is an apocalyptic number.

It is an amenable number.

85324249949 is a deficient number, since it is larger than the sum of its proper divisors (1).

85324249949 is an equidigital number, since it uses as much as digits as its factorization.

85324249949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880, while the sum is 59.

The spelling of 85324249949 in words is "eighty-five billion, three hundred twenty-four million, two hundred forty-nine thousand, nine hundred forty-nine".