438285949 has 2 divisors, whose sum is σ = 438285950. Its totient is φ = 438285948.

The previous prime is 438285943. The next prime is 438285983. The reversal of 438285949 is 949582834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413105625 + 25180324 = 20325^2 + 5018^2 .

It is a cyclic number.

It is not a de Polignac number, because 438285949 - 2¹⁵ = 438253181 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438285896 and 438285905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438285943) 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, 219142974 + 219142975.

It is an arithmetic number, because the mean of its divisors is an integer number (219142975).

Almost surely, 2^438285949 is an apocalyptic number.

It is an amenable number.

438285949 is a deficient number, since it is larger than the sum of its proper divisors (1).

438285949 is an equidigital number, since it uses as much as digits as its factorization.

438285949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The square root of 438285949 is about 20935.2800076808. The cubic root of 438285949 is about 759.6015622734.

The spelling of 438285949 in words is "four hundred thirty-eight million, two hundred eighty-five thousand, nine hundred forty-nine".