40288189 has 16 divisors (see below), whose sum is σ = 44423680. Its totient is φ = 36391680.

The previous prime is 40288139. The next prime is 40288217. The reversal of 40288189 is 98188204.

It is a cyclic number.

It is not a de Polignac number, because 40288189 - 2¹⁵ = 40255421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40288139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42529 + ... + 43465.

It is an arithmetic number, because the mean of its divisors is an integer number (2776480).

Almost surely, 2^40288189 is an apocalyptic number.

It is an amenable number.

40288189 is a deficient number, since it is larger than the sum of its proper divisors (4135491).

40288189 is a wasteful number, since it uses less digits than its factorization.

40288189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 40288189 is about 6347.2977714930. The cubic root of 40288189 is about 342.8145518109.

The spelling of 40288189 in words is "forty million, two hundred eighty-eight thousand, one hundred eighty-nine".