40435613 has 2 divisors, whose sum is σ = 40435614. Its totient is φ = 40435612.

The previous prime is 40435607. The next prime is 40435643. The reversal of 40435613 is 31653404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40424164 + 11449 = 6358^2 + 107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40435613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40435643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217806 + 20217807.

It is an arithmetic number, because the mean of its divisors is an integer number (20217807).

Almost surely, 2^40435613 is an apocalyptic number.

It is an amenable number.

40435613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40435613 is an equidigital number, since it uses as much as digits as its factorization.

40435613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 40435613 is about 6358.9002980075. The cubic root of 40435613 is about 343.2321892867.

The spelling of 40435613 in words is "forty million, four hundred thirty-five thousand, six hundred thirteen".