438680867 has 2 divisors, whose sum is σ = 438680868. Its totient is φ = 438680866.

The previous prime is 438680861. The next prime is 438680927. The reversal of 438680867 is 768086834.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 438680867 - 2²⁰ = 437632291 is a prime.

It is not a weakly prime, because it can be changed into another prime (438680861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219340433 + 219340434.

It is an arithmetic number, because the mean of its divisors is an integer number (219340434).

Almost surely, 2^438680867 is an apocalyptic number.

438680867 is a deficient number, since it is larger than the sum of its proper divisors (1).

438680867 is an equidigital number, since it uses as much as digits as its factorization.

438680867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 50.

The square root of 438680867 is about 20944.7097616558. The cubic root of 438680867 is about 759.8296403704.

The spelling of 438680867 in words is "four hundred thirty-eight million, six hundred eighty thousand, eight hundred sixty-seven".