40435481 has 2 divisors, whose sum is σ = 40435482. Its totient is φ = 40435480.

The previous prime is 40435453. The next prime is 40435511. The reversal of 40435481 is 18453404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28185481 + 12250000 = 5309^2 + 3500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40435481 is a prime.

It is a super-2 number, since 2×40435481² = 3270056247402722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40435441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20217740 + 20217741.

It is an arithmetic number, because the mean of its divisors is an integer number (20217741).

Almost surely, 2^40435481 is an apocalyptic number.

It is an amenable number.

40435481 is a deficient number, since it is larger than the sum of its proper divisors (1).

40435481 is an equidigital number, since it uses as much as digits as its factorization.

40435481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 40435481 is about 6358.8899188459. The cubic root of 40435481 is about 343.2318157983.

Adding to 40435481 its reverse (18453404), we get a palindrome (58888885).

The spelling of 40435481 in words is "forty million, four hundred thirty-five thousand, four hundred eighty-one".