4000343506 has 4 divisors (see below), whose sum is σ = 6000515262. Its totient is φ = 2000171752.

The previous prime is 4000343483. The next prime is 4000343527. The reversal of 4000343506 is 6053430004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3351367881 + 648975625 = 57891^2 + 25475^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000085875 + ... + 1000085878.

Almost surely, 2^4000343506 is an apocalyptic number.

4000343506 is a deficient number, since it is larger than the sum of its proper divisors (2000171756).

4000343506 is a wasteful number, since it uses less digits than its factorization.

4000343506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000171755.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 4000343506 is about 63248.2687984422. The cubic root of 4000343506 is about 1587.4464908163.

The spelling of 4000343506 in words is "four billion, three hundred forty-three thousand, five hundred six".