438857 has 8 divisors (see below), whose sum is σ = 467400. Its totient is φ = 411264.

The previous prime is 438853. The next prime is 438869. The reversal of 438857 is 758834.

It can be written as a sum of positive squares in 4 ways, for example, as 259081 + 179776 = 509^2 + 424^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438857 - 2² = 438853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 869 + ... + 1277.

It is an arithmetic number, because the mean of its divisors is an integer number (58425).

2⁴³⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

438857 is a deficient number, since it is larger than the sum of its proper divisors (28543).

438857 is a wasteful number, since it uses less digits than its factorization.

438857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475.

The product of its digits is 26880, while the sum is 35.

The square root of 438857 is about 662.4628291459. The cubic root of 438857 is about 75.9931318817.

The spelling of 438857 in words is "four hundred thirty-eight thousand, eight hundred fifty-seven".