438492 has 12 divisors (see below), whose sum is σ = 1023176. Its totient is φ = 146160.

The previous prime is 438479. The next prime is 438499. The reversal of 438492 is 294834.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18259 + ... + 18282.

2⁴³⁸⁴⁹² is an apocalyptic number.

It is an amenable number.

438492 is an abundant number, since it is smaller than the sum of its proper divisors (584684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438492 is a wasteful number, since it uses less digits than its factorization.

438492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36548 (or 36546 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 438492 is about 662.1872846861. The cubic root of 438492 is about 75.9720580569.

It can be divided in two parts, 438 and 492, that multiplied together give a triangular number (215496 = T₆₅₆).

The spelling of 438492 in words is "four hundred thirty-eight thousand, four hundred ninety-two".