40055489 has 16 divisors (see below), whose sum is σ = 43300224. Its totient is φ = 36960000.

The previous prime is 40055473. The next prime is 40055501. The reversal of 40055489 is 98455004.

It is a cyclic number.

It is not a de Polignac number, because 40055489 - 2⁴ = 40055473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40055459) 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 in 15 ways as a sum of consecutive naturals, for example, 99689 + ... + 100089.

It is an arithmetic number, because the mean of its divisors is an integer number (2706264).

Almost surely, 2^40055489 is an apocalyptic number.

It is an amenable number.

40055489 is a deficient number, since it is larger than the sum of its proper divisors (3244735).

40055489 is a wasteful number, since it uses less digits than its factorization.

40055489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 40055489 is about 6328.9405906518. The cubic root of 40055489 is about 342.1532576912.

The spelling of 40055489 in words is "forty million, fifty-five thousand, four hundred eighty-nine".