239490073 has 2 divisors, whose sum is σ = 239490074. Its totient is φ = 239490072.

The previous prime is 239490071. The next prime is 239490107. The reversal of 239490073 is 370094932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178837129 + 60652944 = 13373^2 + 7788^2 .

It is a cyclic number.

It is not a de Polignac number, because 239490073 - 2¹ = 239490071 is a prime.

Together with 239490071, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (239490071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119745036 + 119745037.

It is an arithmetic number, because the mean of its divisors is an integer number (119745037).

Almost surely, 2^239490073 is an apocalyptic number.

It is an amenable number.

239490073 is a deficient number, since it is larger than the sum of its proper divisors (1).

239490073 is an equidigital number, since it uses as much as digits as its factorization.

239490073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 239490073 is about 15475.4668104067. The cubic root of 239490073 is about 621.0060608455.

The spelling of 239490073 in words is "two hundred thirty-nine million, four hundred ninety thousand, seventy-three".