438447941 has 2 divisors, whose sum is σ = 438447942. Its totient is φ = 438447940.

The previous prime is 438447929. The next prime is 438447967. The reversal of 438447941 is 149744834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 262116100 + 176331841 = 16190^2 + 13279^2 .

It is a cyclic number.

It is not a de Polignac number, because 438447941 - 2²² = 434253637 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 438447892 and 438447901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438447041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219223970 + 219223971.

It is an arithmetic number, because the mean of its divisors is an integer number (219223971).

Almost surely, 2^438447941 is an apocalyptic number.

It is an amenable number.

438447941 is a deficient number, since it is larger than the sum of its proper divisors (1).

438447941 is an equidigital number, since it uses as much as digits as its factorization.

438447941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The square root of 438447941 is about 20939.1485261459. The cubic root of 438447941 is about 759.6951345328.

It can be divided in two parts, 4384 and 47941, that added together give a palindrome (52325).

The spelling of 438447941 in words is "four hundred thirty-eight million, four hundred forty-seven thousand, nine hundred forty-one".