438261 has 8 divisors (see below), whose sum is σ = 587424. Its totient is φ = 290640.

The previous prime is 438259. The next prime is 438271. The reversal of 438261 is 162834.

It is a happy number.

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

It is not a de Polignac number, because 438261 - 2¹ = 438259 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438211) 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, 831 + ... + 1251.

It is an arithmetic number, because the mean of its divisors is an integer number (73428).

2⁴³⁸²⁶¹ is an apocalyptic number.

It is an amenable number.

438261 is a deficient number, since it is larger than the sum of its proper divisors (149163).

438261 is a wasteful number, since it uses less digits than its factorization.

438261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its digits is 1152, while the sum is 24.

The square root of 438261 is about 662.0128397546. The cubic root of 438261 is about 75.9587148807.

The spelling of 438261 in words is "four hundred thirty-eight thousand, two hundred sixty-one".