40235089 has 2 divisors, whose sum is σ = 40235090. Its totient is φ = 40235088.

The previous prime is 40235087. The next prime is 40235101. The reversal of 40235089 is 98053204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32490000 + 7745089 = 5700^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 40235089 - 2¹ = 40235087 is a prime.

Together with 40235087, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40235089.

It is not a weakly prime, because it can be changed into another prime (40235087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117544 + 20117545.

It is an arithmetic number, because the mean of its divisors is an integer number (20117545).

Almost surely, 2^40235089 is an apocalyptic number.

It is an amenable number.

40235089 is a deficient number, since it is larger than the sum of its proper divisors (1).

40235089 is an equidigital number, since it uses as much as digits as its factorization.

40235089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 40235089 is about 6343.1135099413. The cubic root of 40235089 is about 342.6638752609.

The spelling of 40235089 in words is "forty million, two hundred thirty-five thousand, eighty-nine".