438503941 has 2 divisors, whose sum is σ = 438503942. Its totient is φ = 438503940.

The previous prime is 438503939. The next prime is 438503951. The reversal of 438503941 is 149305834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 426629025 + 11874916 = 20655^2 + 3446^2 .

It is a cyclic number.

It is not a de Polignac number, because 438503941 - 2¹ = 438503939 is a prime.

Together with 438503939, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 438503941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438503921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219251970 + 219251971.

It is an arithmetic number, because the mean of its divisors is an integer number (219251971).

Almost surely, 2^438503941 is an apocalyptic number.

It is an amenable number.

438503941 is a deficient number, since it is larger than the sum of its proper divisors (1).

438503941 is an equidigital number, since it uses as much as digits as its factorization.

438503941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 438503941 is about 20940.4856915975. The cubic root of 438503941 is about 759.7274767354.

The spelling of 438503941 in words is "four hundred thirty-eight million, five hundred three thousand, nine hundred forty-one".