4040391289 has 8 divisors (see below), whose sum is σ = 4515204960. Its totient is φ = 3583495200.

The previous prime is 4040391263. The next prime is 4040391307. The reversal of 4040391289 is 9821930404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4040391289 - 2⁷ = 4040391161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040398289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4478919 + ... + 4479820.

It is an arithmetic number, because the mean of its divisors is an integer number (564400620).

Almost surely, 2^4040391289 is an apocalyptic number.

It is an amenable number.

4040391289 is a deficient number, since it is larger than the sum of its proper divisors (474813671).

4040391289 is a wasteful number, since it uses less digits than its factorization.

4040391289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8958791.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 4040391289 is about 63564.0723129033. The cubic root of 4040391289 is about 1592.7262655221.

The spelling of 4040391289 in words is "four billion, forty million, three hundred ninety-one thousand, two hundred eighty-nine".