438759947 has 2 divisors, whose sum is σ = 438759948. Its totient is φ = 438759946.

The previous prime is 438759929. The next prime is 438759973. The reversal of 438759947 is 749957834.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438759947 - 2¹⁰ = 438758923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 438759892 and 438759901.

It is not a weakly prime, because it can be changed into another prime (438759047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219379973 + 219379974.

It is an arithmetic number, because the mean of its divisors is an integer number (219379974).

Almost surely, 2^438759947 is an apocalyptic number.

438759947 is a deficient number, since it is larger than the sum of its proper divisors (1).

438759947 is an equidigital number, since it uses as much as digits as its factorization.

438759947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 438759947 is about 20946.5975041294. The cubic root of 438759947 is about 759.8752952130.

The spelling of 438759947 in words is "four hundred thirty-eight million, seven hundred fifty-nine thousand, nine hundred forty-seven".