438168497 has 12 divisors (see below), whose sum is σ = 479375820. Its totient is φ = 400278528.

The previous prime is 438168487. The next prime is 438168509. The reversal of 438168497 is 794861834.

It can be written as a sum of positive squares in 6 ways, for example, as 50708641 + 387459856 = 7121^2 + 19684^2 .

It is not a de Polignac number, because 438168497 - 2¹⁰ = 438167473 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438168427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3029 + ... + 29757.

It is an arithmetic number, because the mean of its divisors is an integer number (39947985).

Almost surely, 2^438168497 is an apocalyptic number.

It is an amenable number.

438168497 is a deficient number, since it is larger than the sum of its proper divisors (41207323).

438168497 is a wasteful number, since it uses less digits than its factorization.

438168497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26852 (or 26839 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 438168497 is about 20932.4746984202. The cubic root of 438168497 is about 759.5337034599.

The spelling of 438168497 in words is "four hundred thirty-eight million, one hundred sixty-eight thousand, four hundred ninety-seven".