438829117 has 2 divisors, whose sum is σ = 438829118. Its totient is φ = 438829116.

The previous prime is 438829099. The next prime is 438829129. The reversal of 438829117 is 711928834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418857156 + 19971961 = 20466^2 + 4469^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438829117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438827117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219414558 + 219414559.

It is an arithmetic number, because the mean of its divisors is an integer number (219414559).

Almost surely, 2^438829117 is an apocalyptic number.

It is an amenable number.

438829117 is a deficient number, since it is larger than the sum of its proper divisors (1).

438829117 is an equidigital number, since it uses as much as digits as its factorization.

438829117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 43.

The square root of 438829117 is about 20948.2485425393. The cubic root of 438829117 is about 759.9152242696.

The spelling of 438829117 in words is "four hundred thirty-eight million, eight hundred twenty-nine thousand, one hundred seventeen".