40782271 has 2 divisors, whose sum is σ = 40782272. Its totient is φ = 40782270.

The previous prime is 40782263. The next prime is 40782307. The reversal of 40782271 is 17228704.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40782271 - 2³ = 40782263 is a prime.

It is equal to p_2478370 and since 40782271 and 2478370 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 8.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40782211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20391135 + 20391136.

It is an arithmetic number, because the mean of its divisors is an integer number (20391136).

Almost surely, 2^40782271 is an apocalyptic number.

40782271 is a deficient number, since it is larger than the sum of its proper divisors (1).

40782271 is an equidigital number, since it uses as much as digits as its factorization.

40782271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 40782271 is about 6386.0998269679. The cubic root of 40782271 is about 344.2102526420.

The spelling of 40782271 in words is "forty million, seven hundred eighty-two thousand, two hundred seventy-one".