239955949 has 2 divisors, whose sum is σ = 239955950. Its totient is φ = 239955948.

The previous prime is 239955923. The next prime is 239955967. The reversal of 239955949 is 949559932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149572900 + 90383049 = 12230^2 + 9507^2 .

It is a cyclic number.

It is not a de Polignac number, because 239955949 - 2¹⁷ = 239824877 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239955949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239955349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119977974 + 119977975.

It is an arithmetic number, because the mean of its divisors is an integer number (119977975).

Almost surely, 2^239955949 is an apocalyptic number.

It is an amenable number.

239955949 is a deficient number, since it is larger than the sum of its proper divisors (1).

239955949 is an equidigital number, since it uses as much as digits as its factorization.

239955949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3936600, while the sum is 55.

The square root of 239955949 is about 15490.5115796735. The cubic root of 239955949 is about 621.4084775590.

The spelling of 239955949 in words is "two hundred thirty-nine million, nine hundred fifty-five thousand, nine hundred forty-nine".