438082657 has 2 divisors, whose sum is σ = 438082658. Its totient is φ = 438082656.

The previous prime is 438082651. The next prime is 438082691. The reversal of 438082657 is 756280834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312440976 + 125641681 = 17676^2 + 11209^2 .

It is a cyclic number.

It is not a de Polignac number, because 438082657 - 2¹⁵ = 438049889 is a prime.

It is not a weakly prime, because it can be changed into another prime (438082651) 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, 219041328 + 219041329.

It is an arithmetic number, because the mean of its divisors is an integer number (219041329).

Almost surely, 2^438082657 is an apocalyptic number.

It is an amenable number.

438082657 is a deficient number, since it is larger than the sum of its proper divisors (1).

438082657 is an equidigital number, since it uses as much as digits as its factorization.

438082657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 438082657 is about 20930.4241954147. The cubic root of 438082657 is about 759.4841010569.

The spelling of 438082657 in words is "four hundred thirty-eight million, eighty-two thousand, six hundred fifty-seven".