243899044 has 6 divisors (see below), whose sum is σ = 426823334. Its totient is φ = 121949520.

The previous prime is 243899039. The next prime is 243899081. The reversal of 243899044 is 440998342.

It can be written as a sum of positive squares in only one way, i.e., 233722944 + 10176100 = 15288^2 + 3190^2 .

It is a super-2 number, since 2×243899044² = 118973487328227872, which contains 22 as substring.

It is an unprimeable number.

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, 30487377 + ... + 30487384.

Almost surely, 2^243899044 is an apocalyptic number.

It is an amenable number.

243899044 is a deficient number, since it is larger than the sum of its proper divisors (182924290).

243899044 is a wasteful number, since it uses less digits than its factorization.

243899044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60974765 (or 60974763 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 243899044 is about 15617.2674946676. The cubic root of 243899044 is about 624.7937828467.

It can be divided in two parts, 24389 and 9044, that added together give a palindrome (33433).

The spelling of 243899044 in words is "two hundred forty-three million, eight hundred ninety-nine thousand, forty-four".