40287271 has 2 divisors, whose sum is σ = 40287272. Its totient is φ = 40287270.

The previous prime is 40287241. The next prime is 40287281. The reversal of 40287271 is 17278204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40287271 - 2⁹ = 40286759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40287241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20143635 + 20143636.

It is an arithmetic number, because the mean of its divisors is an integer number (20143636).

Almost surely, 2^40287271 is an apocalyptic number.

40287271 is a deficient number, since it is larger than the sum of its proper divisors (1).

40287271 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 11 representation: 40287271 = (20817472)₁₁.

40287271 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 40287271 is about 6347.2254568433. The cubic root of 40287271 is about 342.8119480193.

The spelling of 40287271 in words is "forty million, two hundred eighty-seven thousand, two hundred seventy-one".