40338047 has 2 divisors, whose sum is σ = 40338048. Its totient is φ = 40338046.

The previous prime is 40338031. The next prime is 40338091. The reversal of 40338047 is 74083304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40338047 - 2⁴ = 40338031 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40338017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20169023 + 20169024.

It is an arithmetic number, because the mean of its divisors is an integer number (20169024).

Almost surely, 2^40338047 is an apocalyptic number.

40338047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40338047 is an equidigital number, since it uses as much as digits as its factorization.

40338047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 40338047 is about 6351.2240552511. The cubic root of 40338047 is about 342.9559083932.

The spelling of 40338047 in words is "forty million, three hundred thirty-eight thousand, forty-seven".