40052489 has 2 divisors, whose sum is σ = 40052490. Its totient is φ = 40052488.

The previous prime is 40052473. The next prime is 40052521. The reversal of 40052489 is 98425004.

It is an a-pointer prime, because the next prime (40052521) can be obtained adding 40052489 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21086464 + 18966025 = 4592^2 + 4355^2 .

It is a cyclic number.

It is not a de Polignac number, because 40052489 - 2⁴ = 40052473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40052429) 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, 20026244 + 20026245.

It is an arithmetic number, because the mean of its divisors is an integer number (20026245).

Almost surely, 2^40052489 is an apocalyptic number.

It is an amenable number.

40052489 is a deficient number, since it is larger than the sum of its proper divisors (1).

40052489 is an equidigital number, since it uses as much as digits as its factorization.

40052489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 40052489 is about 6328.7035797231. The cubic root of 40052489 is about 342.1447154962.

The spelling of 40052489 in words is "forty million, fifty-two thousand, four hundred eighty-nine".