40323589 has 2 divisors, whose sum is σ = 40323590. Its totient is φ = 40323588.

The previous prime is 40323581. The next prime is 40323629. The reversal of 40323589 is 98532304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40322500 + 1089 = 6350^2 + 33^2 .

It is a cyclic number.

It is not a de Polignac number, because 40323589 - 2³ = 40323581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40323581) 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, 20161794 + 20161795.

It is an arithmetic number, because the mean of its divisors is an integer number (20161795).

Almost surely, 2^40323589 is an apocalyptic number.

It is an amenable number.

40323589 is a deficient number, since it is larger than the sum of its proper divisors (1).

40323589 is an equidigital number, since it uses as much as digits as its factorization.

40323589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 40323589 is about 6350.0857474525. The cubic root of 40323589 is about 342.9149293059.

The spelling of 40323589 in words is "forty million, three hundred twenty-three thousand, five hundred eighty-nine".