438669 has 32 divisors (see below), whose sum is σ = 814080. Its totient is φ = 226800.

The previous prime is 438667. The next prime is 438671. The reversal of 438669 is 966834.

It is an interprime number because it is at equal distance from previous prime (438667) and next prime (438671).

It is not a de Polignac number, because 438669 - 2¹ = 438667 is a prime.

It is a super-2 number, since 2×438669² = 384860983122, which contains 22 as substring.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438661) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1974 + ... + 2184.

It is an arithmetic number, because the mean of its divisors is an integer number (25440).

2⁴³⁸⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

438669 is a deficient number, since it is larger than the sum of its proper divisors (375411).

438669 is a wasteful number, since it uses less digits than its factorization.

438669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 232 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 438669 is about 662.3209191925. The cubic root of 438669 is about 75.9822788784.

The spelling of 438669 in words is "four hundred thirty-eight thousand, six hundred sixty-nine".