85380973 has 2 divisors, whose sum is σ = 85380974. Its totient is φ = 85380972.

The previous prime is 85380949. The next prime is 85381063. The reversal of 85380973 is 37908358.

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., 45400644 + 39980329 = 6738^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 85380973 - 2⁹ = 85380461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85380943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42690486 + 42690487.

It is an arithmetic number, because the mean of its divisors is an integer number (42690487).

Almost surely, 2^85380973 is an apocalyptic number.

It is an amenable number.

85380973 is a deficient number, since it is larger than the sum of its proper divisors (1).

85380973 is an equidigital number, since it uses as much as digits as its factorization.

85380973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 85380973 is about 9240.1825198423. The cubic root of 85380973 is about 440.3388797743.

The spelling of 85380973 in words is "eighty-five million, three hundred eighty thousand, nine hundred seventy-three".