40071029 has 2 divisors, whose sum is σ = 40071030. Its totient is φ = 40071028.

The previous prime is 40071013. The next prime is 40071041. The reversal of 40071029 is 92017004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38626225 + 1444804 = 6215^2 + 1202^2 .

It is a cyclic number.

It is not a de Polignac number, because 40071029 - 2⁴ = 40071013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40070995 and 40071013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40071049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20035514 + 20035515.

It is an arithmetic number, because the mean of its divisors is an integer number (20035515).

Almost surely, 2^40071029 is an apocalyptic number.

It is an amenable number.

40071029 is a deficient number, since it is larger than the sum of its proper divisors (1).

40071029 is an equidigital number, since it uses as much as digits as its factorization.

40071029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 40071029 is about 6330.1681652228. The cubic root of 40071029 is about 342.1974994360.

The spelling of 40071029 in words is "forty million, seventy-one thousand, twenty-nine".