40163489 has 2 divisors, whose sum is σ = 40163490. Its totient is φ = 40163488.

The previous prime is 40163479. The next prime is 40163491. The reversal of 40163489 is 98436104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38031889 + 2131600 = 6167^2 + 1460^2 .

It is a cyclic number.

It is not a de Polignac number, because 40163489 - 2²⁴ = 23386273 is a prime.

It is a super-2 number, since 2×40163489² = 3226211697306242, which contains 22 as substring.

Together with 40163491, 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 (40163429) 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, 20081744 + 20081745.

It is an arithmetic number, because the mean of its divisors is an integer number (20081745).

Almost surely, 2^40163489 is an apocalyptic number.

It is an amenable number.

40163489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40163489 is an equidigital number, since it uses as much as digits as its factorization.

40163489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 40163489 is about 6337.4670807824. The cubic root of 40163489 is about 342.4604930722.

The spelling of 40163489 in words is "forty million, one hundred sixty-three thousand, four hundred eighty-nine".