239669413 has 2 divisors, whose sum is σ = 239669414. Its totient is φ = 239669412.

The previous prime is 239669399. The next prime is 239669459. The reversal of 239669413 is 314966932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188732644 + 50936769 = 13738^2 + 7137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239669413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239669413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239669483) 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, 119834706 + 119834707.

It is an arithmetic number, because the mean of its divisors is an integer number (119834707).

Almost surely, 2^239669413 is an apocalyptic number.

It is an amenable number.

239669413 is a deficient number, since it is larger than the sum of its proper divisors (1).

239669413 is an equidigital number, since it uses as much as digits as its factorization.

239669413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 43.

The square root of 239669413 is about 15481.2600585353. The cubic root of 239669413 is about 621.1610337808.

The spelling of 239669413 in words is "two hundred thirty-nine million, six hundred sixty-nine thousand, four hundred thirteen".