4000684522 has 4 divisors (see below), whose sum is σ = 6001026786. Its totient is φ = 2000342260.

The previous prime is 4000684483. The next prime is 4000684601. The reversal of 4000684522 is 2254860004.

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., 3990322561 + 10361961 = 63169^2 + 3219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000171129 + ... + 1000171132.

Almost surely, 2^4000684522 is an apocalyptic number.

4000684522 is a deficient number, since it is larger than the sum of its proper divisors (2000342264).

4000684522 is a wasteful number, since it uses less digits than its factorization.

4000684522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000342263.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 4000684522 is about 63250.9645934353. The cubic root of 4000684522 is about 1587.4915977153.

The spelling of 4000684522 in words is "four billion, six hundred eighty-four thousand, five hundred twenty-two".