40940929 has 2 divisors, whose sum is σ = 40940930. Its totient is φ = 40940928.

The previous prime is 40940903. The next prime is 40940941. The reversal of 40940929 is 92904904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40640625 + 300304 = 6375^2 + 548^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40940929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40940729) 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, 20470464 + 20470465.

It is an arithmetic number, because the mean of its divisors is an integer number (20470465).

Almost surely, 2^40940929 is an apocalyptic number.

It is an amenable number.

40940929 is a deficient number, since it is larger than the sum of its proper divisors (1).

40940929 is an equidigital number, since it uses as much as digits as its factorization.

40940929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 40940929 is about 6398.5099046575. The cubic root of 40940929 is about 344.6560431104.

The spelling of 40940929 in words is "forty million, nine hundred forty thousand, nine hundred twenty-nine".