438746 has 36 divisors (see below), whose sum is σ = 864234. Its totient is φ = 166320.

The previous prime is 438733. The next prime is 438761. The reversal of 438746 is 647834.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 290521 + 148225 = 539^2 + 385^2 .

It is an unprimeable number.

438746 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11840 + ... + 11876.

2⁴³⁸⁷⁴⁶ is an apocalyptic number.

438746 is a deficient number, since it is larger than the sum of its proper divisors (425488).

438746 is a wasteful number, since it uses less digits than its factorization.

438746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75 (or 57 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 438746 is about 662.3790455623. The cubic root of 438746 is about 75.9867243663.

The spelling of 438746 in words is "four hundred thirty-eight thousand, seven hundred forty-six".