438001 has 2 divisors, whose sum is σ = 438002. Its totient is φ = 438000.

The previous prime is 437977. The next prime is 438017. The reversal of 438001 is 100834.

It is an a-pointer prime, because the next prime (438017) can be obtained adding 438001 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 435600 + 2401 = 660^2 + 49^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438001 is a prime.

It is not a weakly prime, because it can be changed into another prime (438091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219000 + 219001.

It is an arithmetic number, because the mean of its divisors is an integer number (219001).

2⁴³⁸⁰⁰¹ is an apocalyptic number.

It is an amenable number.

438001 is a deficient number, since it is larger than the sum of its proper divisors (1).

438001 is an equidigital number, since it uses as much as digits as its factorization.

438001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 438001 is about 661.8164398079. The cubic root of 438001 is about 75.9436909775.

Adding to 438001 its reverse (100834), we get a palindrome (538835).

The spelling of 438001 in words is "four hundred thirty-eight thousand, one".