4000557509 has 16 divisors (see below), whose sum is σ = 4512412800. Its totient is φ = 3519062976.

The previous prime is 4000557467. The next prime is 4000557523. The reversal of 4000557509 is 9057550004.

It is a de Polignac number, because none of the positive numbers 2^k-4000557509 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 (4000557529) 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 15 ways as a sum of consecutive naturals, for example, 55562 + ... + 105300.

It is an arithmetic number, because the mean of its divisors is an integer number (282025800).

Almost surely, 2^4000557509 is an apocalyptic number.

It is an amenable number.

4000557509 is a deficient number, since it is larger than the sum of its proper divisors (511855291).

4000557509 is a wasteful number, since it uses less digits than its factorization.

4000557509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50044.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 4000557509 is about 63249.9605454422. The cubic root of 4000557509 is about 1587.4747977399.

The spelling of 4000557509 in words is "four billion, five hundred fifty-seven thousand, five hundred nine".