40161629 has 2 divisors, whose sum is σ = 40161630. Its totient is φ = 40161628.

The previous prime is 40161619. The next prime is 40161643. The reversal of 40161629 is 92616104.

40161629 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., 39564100 + 597529 = 6290^2 + 773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40161629 is a prime.

It is a super-2 number, since 2×40161629² = 3225912887867282, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2442890 and since 40161629 and 2442890 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40161619) 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, 20080814 + 20080815.

It is an arithmetic number, because the mean of its divisors is an integer number (20080815).

Almost surely, 2^40161629 is an apocalyptic number.

It is an amenable number.

40161629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40161629 is an equidigital number, since it uses as much as digits as its factorization.

40161629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40161629 is about 6337.3203327589. The cubic root of 40161629 is about 342.4552064602.

The spelling of 40161629 in words is "forty million, one hundred sixty-one thousand, six hundred twenty-nine".