243898498 has 4 divisors (see below), whose sum is σ = 365847750. Its totient is φ = 121949248.

The previous prime is 243898493. The next prime is 243898513. The reversal of 243898498 is 894898342.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 243453609 + 444889 = 15603^2 + 667^2 .

It is not an unprimeable number, because it can be changed into a prime (243898493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60974623 + ... + 60974626.

Almost surely, 2^243898498 is an apocalyptic number.

243898498 is a deficient number, since it is larger than the sum of its proper divisors (121949252).

243898498 is a wasteful number, since it uses less digits than its factorization.

243898498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121949251.

The product of its digits is 3981312, while the sum is 55.

The square root of 243898498 is about 15617.2500140069. The cubic root of 243898498 is about 624.7933166187.

The spelling of 243898498 in words is "two hundred forty-three million, eight hundred ninety-eight thousand, four hundred ninety-eight".