239151973 has 2 divisors, whose sum is σ = 239151974. Its totient is φ = 239151972.

The previous prime is 239151961. The next prime is 239152013. The reversal of 239151973 is 379151932.

It is an a-pointer prime, because the next prime (239152013) can be obtained adding 239151973 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206410689 + 32741284 = 14367^2 + 5722^2 .

It is a cyclic number.

It is not a de Polignac number, because 239151973 - 2¹³ = 239143781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239151923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119575986 + 119575987.

It is an arithmetic number, because the mean of its divisors is an integer number (119575987).

Almost surely, 2^239151973 is an apocalyptic number.

It is an amenable number.

239151973 is a deficient number, since it is larger than the sum of its proper divisors (1).

239151973 is an equidigital number, since it uses as much as digits as its factorization.

239151973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51030, while the sum is 40.

The square root of 239151973 is about 15464.5392107234. The cubic root of 239151973 is about 620.7136882101.

The spelling of 239151973 in words is "two hundred thirty-nine million, one hundred fifty-one thousand, nine hundred seventy-three".