438993243 has 32 divisors (see below), whose sum is σ = 702166080. Its totient is φ = 269464320.

The previous prime is 438993239. The next prime is 438993251. The reversal of 438993243 is 342399834.

It is not a de Polignac number, because 438993243 - 2² = 438993239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (438993293) 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 in 31 ways as a sum of consecutive naturals, for example, 160455 + ... + 163167.

It is an arithmetic number, because the mean of its divisors is an integer number (21942690).

Almost surely, 2^438993243 is an apocalyptic number.

438993243 is a deficient number, since it is larger than the sum of its proper divisors (263172837).

438993243 is a wasteful number, since it uses less digits than its factorization.

438993243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3196 (or 3190 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 438993243 is about 20952.1655921291. The cubic root of 438993243 is about 760.0099508162.

The spelling of 438993243 in words is "four hundred thirty-eight million, nine hundred ninety-three thousand, two hundred forty-three".