40730069 has 2 divisors, whose sum is σ = 40730070. Its totient is φ = 40730068.

The previous prime is 40730057. The next prime is 40730077. The reversal of 40730069 is 96003704.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40475044 + 255025 = 6362^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 40730069 - 2⁸ = 40729813 is a prime.

It is a super-2 number, since 2×40730069² = 3317877041489522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2475362 and since 40730069 and 2475362 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 (40730029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20365034 + 20365035.

It is an arithmetic number, because the mean of its divisors is an integer number (20365035).

Almost surely, 2^40730069 is an apocalyptic number.

It is an amenable number.

40730069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40730069 is an equidigital number, since it uses as much as digits as its factorization.

40730069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 40730069 is about 6382.0113600651. The cubic root of 40730069 is about 344.0633249430.

The spelling of 40730069 in words is "forty million, seven hundred thirty thousand, sixty-nine".