40940423 has 2 divisors, whose sum is σ = 40940424. Its totient is φ = 40940422.

The previous prime is 40940413. The next prime is 40940443. The reversal of 40940423 is 32404904.

40940423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40940423 - 2¹⁰ = 40939399 is a prime.

It is a super-2 number, since 2×40940423² = 3352236470837858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40940392 and 40940401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40940413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20470211 + 20470212.

It is an arithmetic number, because the mean of its divisors is an integer number (20470212).

Almost surely, 2^40940423 is an apocalyptic number.

40940423 is a deficient number, since it is larger than the sum of its proper divisors (1).

40940423 is an equidigital number, since it uses as much as digits as its factorization.

40940423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40940423 is about 6398.4703640792. The cubic root of 40940423 is about 344.6546232055.

The spelling of 40940423 in words is "forty million, nine hundred forty thousand, four hundred twenty-three".