243474437 has 2 divisors, whose sum is σ = 243474438. Its totient is φ = 243474436.

The previous prime is 243474431. The next prime is 243474457. The reversal of 243474437 is 734474342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227225476 + 16248961 = 15074^2 + 4031^2 .

It is a cyclic number.

It is not a de Polignac number, because 243474437 - 2¹⁴ = 243458053 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243474437.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243474431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121737218 + 121737219.

It is an arithmetic number, because the mean of its divisors is an integer number (121737219).

Almost surely, 2^243474437 is an apocalyptic number.

It is an amenable number.

243474437 is a deficient number, since it is larger than the sum of its proper divisors (1).

243474437 is an equidigital number, since it uses as much as digits as its factorization.

243474437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 38.

The square root of 243474437 is about 15603.6674214750. The cubic root of 243474437 is about 624.4310017161.

The spelling of 243474437 in words is "two hundred forty-three million, four hundred seventy-four thousand, four hundred thirty-seven".