35489981 has 2 divisors, whose sum is σ = 35489982. Its totient is φ = 35489980.

The previous prime is 35489963. The next prime is 35490011. The reversal of 35489981 is 18998453.

35489981 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 can be written as a sum of positive squares in only one way, i.e., 26429881 + 9060100 = 5141^2 + 3010^2 .

It is a cyclic number.

It is not a de Polignac number, because 35489981 - 2⁶ = 35489917 is a prime.

It is a super-2 number, since 2×35489981² = 2519077502760722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35489911) 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, 17744990 + 17744991.

It is an arithmetic number, because the mean of its divisors is an integer number (17744991).

Almost surely, 2^35489981 is an apocalyptic number.

It is an amenable number.

35489981 is a deficient number, since it is larger than the sum of its proper divisors (1).

35489981 is an equidigital number, since it uses as much as digits as its factorization.

35489981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 35489981 is about 5957.3468087732. The cubic root of 35489981 is about 328.6260012244.

The spelling of 35489981 in words is "thirty-five million, four hundred eighty-nine thousand, nine hundred eighty-one".