40281629 has 2 divisors, whose sum is σ = 40281630. Its totient is φ = 40281628.

The previous prime is 40281613. The next prime is 40281649. The reversal of 40281629 is 92618204.

40281629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35976004 + 4305625 = 5998^2 + 2075^2 .

It is a cyclic number.

It is not a de Polignac number, because 40281629 - 2⁴ = 40281613 is a prime.

It is a super-3 number, since 3×40281629³ (a number of 24 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40281595 and 40281604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40281649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20140814 + 20140815.

It is an arithmetic number, because the mean of its divisors is an integer number (20140815).

Almost surely, 2^40281629 is an apocalyptic number.

It is an amenable number.

40281629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40281629 is an equidigital number, since it uses as much as digits as its factorization.

40281629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40281629 is about 6346.7809951187. The cubic root of 40281629 is about 342.7959443266.

The spelling of 40281629 in words is "forty million, two hundred eighty-one thousand, six hundred twenty-nine".