438572969 has 2 divisors, whose sum is σ = 438572970. Its totient is φ = 438572968.

The previous prime is 438572963. The next prime is 438572989. The reversal of 438572969 is 969275834.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423865744 + 14707225 = 20588^2 + 3835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438572969 is a prime.

It is a super-2 number, since 2×438572969² = 384692498274949922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438572969.

It is not a weakly prime, because it can be changed into another prime (438572963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219286484 + 219286485.

It is an arithmetic number, because the mean of its divisors is an integer number (219286485).

Almost surely, 2^438572969 is an apocalyptic number.

It is an amenable number.

438572969 is a deficient number, since it is larger than the sum of its proper divisors (1).

438572969 is an equidigital number, since it uses as much as digits as its factorization.

438572969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 53.

The square root of 438572969 is about 20942.1338215570. The cubic root of 438572969 is about 759.7673393317.

The spelling of 438572969 in words is "four hundred thirty-eight million, five hundred seventy-two thousand, nine hundred sixty-nine".