40535489 has 2 divisors, whose sum is σ = 40535490. Its totient is φ = 40535488.

The previous prime is 40535447. The next prime is 40535491. The reversal of 40535489 is 98453504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40195600 + 339889 = 6340^2 + 583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40535489 is a prime.

Together with 40535491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40535389) 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, 20267744 + 20267745.

It is an arithmetic number, because the mean of its divisors is an integer number (20267745).

Almost surely, 2^40535489 is an apocalyptic number.

It is an amenable number.

40535489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40535489 is an equidigital number, since it uses as much as digits as its factorization.

40535489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 40535489 is about 6366.7486992970. The cubic root of 40535489 is about 343.5145515399.

The spelling of 40535489 in words is "forty million, five hundred thirty-five thousand, four hundred eighty-nine".