438540533 has 2 divisors, whose sum is σ = 438540534. Its totient is φ = 438540532.

The previous prime is 438540511. The next prime is 438540559. The reversal of 438540533 is 335045834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304397809 + 134142724 = 17447^2 + 11582^2 .

It is a cyclic number.

It is not a de Polignac number, because 438540533 - 2¹⁶ = 438474997 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 438540493 and 438540502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (438540593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219270266 + 219270267.

It is an arithmetic number, because the mean of its divisors is an integer number (219270267).

Almost surely, 2^438540533 is an apocalyptic number.

It is an amenable number.

438540533 is a deficient number, since it is larger than the sum of its proper divisors (1).

438540533 is an equidigital number, since it uses as much as digits as its factorization.

438540533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 438540533 is about 20941.3593875851. The cubic root of 438540533 is about 759.7486085672.

The spelling of 438540533 in words is "four hundred thirty-eight million, five hundred forty thousand, five hundred thirty-three".