40243283 has 2 divisors, whose sum is σ = 40243284. Its totient is φ = 40243282.

The previous prime is 40243279. The next prime is 40243303. The reversal of 40243283 is 38234204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40243283 - 2² = 40243279 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40243223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121641 + 20121642.

It is an arithmetic number, because the mean of its divisors is an integer number (20121642).

Almost surely, 2^40243283 is an apocalyptic number.

40243283 is a deficient number, since it is larger than the sum of its proper divisors (1).

40243283 is an equidigital number, since it uses as much as digits as its factorization.

40243283 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 40243283 is about 6343.7593743773. The cubic root of 40243283 is about 342.6871352005.

Adding to 40243283 its reverse (38234204), we get a palindrome (78477487).

The spelling of 40243283 in words is "forty million, two hundred forty-three thousand, two hundred eighty-three".