39223973 has 2 divisors, whose sum is σ = 39223974. Its totient is φ = 39223972.

The previous prime is 39223957. The next prime is 39224023. The reversal of 39223973 is 37932293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34304449 + 4919524 = 5857^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 39223973 - 2⁴ = 39223957 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39223273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19611986 + 19611987.

It is an arithmetic number, because the mean of its divisors is an integer number (19611987).

Almost surely, 2^39223973 is an apocalyptic number.

It is an amenable number.

39223973 is a deficient number, since it is larger than the sum of its proper divisors (1).

39223973 is an equidigital number, since it uses as much as digits as its factorization.

39223973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 38.

The square root of 39223973 is about 6262.9045178735. The cubic root of 39223973 is about 339.7690848445.

The spelling of 39223973 in words is "thirty-nine million, two hundred twenty-three thousand, nine hundred seventy-three".