40343383 has 2 divisors, whose sum is σ = 40343384. Its totient is φ = 40343382.

The previous prime is 40343371. The next prime is 40343393. The reversal of 40343383 is 38334304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40343383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40343323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20171691 + 20171692.

It is an arithmetic number, because the mean of its divisors is an integer number (20171692).

Almost surely, 2^40343383 is an apocalyptic number.

40343383 is a deficient number, since it is larger than the sum of its proper divisors (1).

40343383 is an equidigital number, since it uses as much as digits as its factorization.

40343383 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 40343383 is about 6351.6441178643. The cubic root of 40343383 is about 342.9710300312.

Adding to 40343383 its reverse (38334304), we get a palindrome (78677687).

The spelling of 40343383 in words is "forty million, three hundred forty-three thousand, three hundred eighty-three".