239915497 has 2 divisors, whose sum is σ = 239915498. Its totient is φ = 239915496.

The previous prime is 239915491. The next prime is 239915503. The reversal of 239915497 is 794519932.

It is a balanced prime because it is at equal distance from previous prime (239915491) and next prime (239915503).

It can be written as a sum of positive squares in only one way, i.e., 158482921 + 81432576 = 12589^2 + 9024^2 .

It is a cyclic number.

It is not a de Polignac number, because 239915497 - 2¹⁹ = 239391209 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239915497.

It is not a weakly prime, because it can be changed into another prime (239915491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119957748 + 119957749.

It is an arithmetic number, because the mean of its divisors is an integer number (119957749).

Almost surely, 2^239915497 is an apocalyptic number.

It is an amenable number.

239915497 is a deficient number, since it is larger than the sum of its proper divisors (1).

239915497 is an equidigital number, since it uses as much as digits as its factorization.

239915497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 49.

The square root of 239915497 is about 15489.2058221201. The cubic root of 239915497 is about 621.3735563877.

The spelling of 239915497 in words is "two hundred thirty-nine million, nine hundred fifteen thousand, four hundred ninety-seven".