438861 has 8 divisors (see below), whose sum is σ = 588544. Its totient is φ = 290880.

The previous prime is 438853. The next prime is 438869. The reversal of 438861 is 168834.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (438853) and next prime (438869).

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

It is not a de Polignac number, because 438861 - 2³ = 438853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438869) 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, 420 + ... + 1026.

It is an arithmetic number, because the mean of its divisors is an integer number (73568).

2⁴³⁸⁸⁶¹ is an apocalyptic number.

It is an amenable number.

438861 is a deficient number, since it is larger than the sum of its proper divisors (149683).

438861 is a wasteful number, since it uses less digits than its factorization.

438861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its digits is 4608, while the sum is 30.

The square root of 438861 is about 662.4658481763. The cubic root of 438861 is about 75.9933627629.

The spelling of 438861 in words is "four hundred thirty-eight thousand, eight hundred sixty-one".