40006793 has 2 divisors, whose sum is σ = 40006794. Its totient is φ = 40006792.

The previous prime is 40006783. The next prime is 40006819. The reversal of 40006793 is 39760004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29560969 + 10445824 = 5437^2 + 3232^2 .

It is a cyclic number.

It is not a de Polignac number, because 40006793 - 2⁸ = 40006537 is a prime.

It is a super-2 number, since 2×40006793² = 3201086972289698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40006783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20003396 + 20003397.

It is an arithmetic number, because the mean of its divisors is an integer number (20003397).

Almost surely, 2^40006793 is an apocalyptic number.

It is an amenable number.

40006793 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006793 is an equidigital number, since it uses as much as digits as its factorization.

40006793 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 40006793 is about 6325.0923313419. The cubic root of 40006793 is about 342.0145480172.

Adding to 40006793 its reverse (39760004), we get a palindrome (79766797).

The spelling of 40006793 in words is "forty million, six thousand, seven hundred ninety-three".