40548289 has 2 divisors, whose sum is σ = 40548290. Its totient is φ = 40548288.

The previous prime is 40548283. The next prime is 40548307. The reversal of 40548289 is 98284504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33258289 + 7290000 = 5767^2 + 2700^2 .

It is a cyclic number.

It is not a de Polignac number, because 40548289 - 2¹⁵ = 40515521 is a prime.

It is not a weakly prime, because it can be changed into another prime (40548283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20274144 + 20274145.

It is an arithmetic number, because the mean of its divisors is an integer number (20274145).

Almost surely, 2^40548289 is an apocalyptic number.

It is an amenable number.

40548289 is a deficient number, since it is larger than the sum of its proper divisors (1).

40548289 is an equidigital number, since it uses as much as digits as its factorization.

40548289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 40548289 is about 6367.7538426042. The cubic root of 40548289 is about 343.5507052382.

The spelling of 40548289 in words is "forty million, five hundred forty-eight thousand, two hundred eighty-nine".