40030069 has 2 divisors, whose sum is σ = 40030070. Its totient is φ = 40030068.

The previous prime is 40030043. The next prime is 40030103. The reversal of 40030069 is 96003004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33466225 + 6563844 = 5785^2 + 2562^2 .

It is a cyclic number.

It is not a de Polignac number, because 40030069 - 2⁹ = 40029557 is a prime.

It is a super-3 number, since 3×40030069³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40030369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20015034 + 20015035.

It is an arithmetic number, because the mean of its divisors is an integer number (20015035).

Almost surely, 2^40030069 is an apocalyptic number.

It is an amenable number.

40030069 is a deficient number, since it is larger than the sum of its proper divisors (1).

40030069 is an equidigital number, since it uses as much as digits as its factorization.

40030069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 40030069 is about 6326.9320369354. The cubic root of 40030069 is about 342.0808633157.

The spelling of 40030069 in words is "forty million, thirty thousand, sixty-nine".