438494569 has 2 divisors, whose sum is σ = 438494570. Its totient is φ = 438494568.

The previous prime is 438494519. The next prime is 438494603. The reversal of 438494569 is 965494834.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428490000 + 10004569 = 20700^2 + 3163^2 .

It is a cyclic number.

It is not a de Polignac number, because 438494569 - 2¹⁵ = 438461801 is a prime.

It is a super-2 number, since 2×438494569² = 384554974084991522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (438494519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219247284 + 219247285.

It is an arithmetic number, because the mean of its divisors is an integer number (219247285).

Almost surely, 2^438494569 is an apocalyptic number.

It is an amenable number.

438494569 is a deficient number, since it is larger than the sum of its proper divisors (1).

438494569 is an equidigital number, since it uses as much as digits as its factorization.

438494569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3732480, while the sum is 52.

The square root of 438494569 is about 20940.2619133572. The cubic root of 438494569 is about 759.7220642286.

The spelling of 438494569 in words is "four hundred thirty-eight million, four hundred ninety-four thousand, five hundred sixty-nine".