438961 has 2 divisors, whose sum is σ = 438962. Its totient is φ = 438960.

The previous prime is 438953. The next prime is 438967. The reversal of 438961 is 169834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360000 + 78961 = 600^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 438961 - 2³ = 438953 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (438967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219480 + 219481.

It is an arithmetic number, because the mean of its divisors is an integer number (219481).

2⁴³⁸⁹⁶¹ is an apocalyptic number.

It is an amenable number.

438961 is a deficient number, since it is larger than the sum of its proper divisors (1).

438961 is an equidigital number, since it uses as much as digits as its factorization.

438961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

The square root of 438961 is about 662.5413194662. The cubic root of 438961 is about 75.9991343392. Note that the first 3 decimals are identical.

The spelling of 438961 in words is "four hundred thirty-eight thousand, nine hundred sixty-one".