40871029 has 2 divisors, whose sum is σ = 40871030. Its totient is φ = 40871028.

The previous prime is 40870997. The next prime is 40871081. The reversal of 40871029 is 92017804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37638225 + 3232804 = 6135^2 + 1798^2 .

It is a cyclic number.

It is not a de Polignac number, because 40871029 - 2⁵ = 40870997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40871099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20435514 + 20435515.

It is an arithmetic number, because the mean of its divisors is an integer number (20435515).

Almost surely, 2^40871029 is an apocalyptic number.

It is an amenable number.

40871029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40871029 is an equidigital number, since it uses as much as digits as its factorization.

40871029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40871029 is about 6393.0453619539. The cubic root of 40871029 is about 344.4597832650.

The spelling of 40871029 in words is "forty million, eight hundred seventy-one thousand, twenty-nine".