40680047 has 2 divisors, whose sum is σ = 40680048. Its totient is φ = 40680046.

The previous prime is 40680037. The next prime is 40680049. The reversal of 40680047 is 74008604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40680047 - 2¹⁴ = 40663663 is a prime.

Together with 40680049, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_2472455 and since 40680047 and 2472455 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40680049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20340023 + 20340024.

It is an arithmetic number, because the mean of its divisors is an integer number (20340024).

Almost surely, 2^40680047 is an apocalyptic number.

40680047 is a deficient number, since it is larger than the sum of its proper divisors (1).

40680047 is an equidigital number, since it uses as much as digits as its factorization.

40680047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40680047 is about 6378.0911721298. The cubic root of 40680047 is about 343.9224152370.

The spelling of 40680047 in words is "forty million, six hundred eighty thousand, forty-seven".