40930081 has 2 divisors, whose sum is σ = 40930082. Its totient is φ = 40930080.

The previous prime is 40930063. The next prime is 40930093. The reversal of 40930081 is 18003904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26368225 + 14561856 = 5135^2 + 3816^2 .

It is a cyclic number.

It is not a de Polignac number, because 40930081 - 2⁷ = 40929953 is a prime.

It is a super-2 number, since 2×40930081² = 3350543061333122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40930051) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20465040 + 20465041.

It is an arithmetic number, because the mean of its divisors is an integer number (20465041).

Almost surely, 2^40930081 is an apocalyptic number.

It is an amenable number.

40930081 is a deficient number, since it is larger than the sum of its proper divisors (1).

40930081 is an equidigital number, since it uses as much as digits as its factorization.

40930081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 40930081 is about 6397.6621511299. The cubic root of 40930081 is about 344.6255995818.

Adding to 40930081 its reverse (18003904), we get a palindrome (58933985).

The spelling of 40930081 in words is "forty million, nine hundred thirty thousand, eighty-one".