4000640134 has 8 divisors (see below), whose sum is σ = 6006453840. Its totient is φ = 1998488856.

The previous prime is 4000640123. The next prime is 4000640159. The reversal of 4000640134 is 4310460004.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 912874 + ... + 917245.

It is an arithmetic number, because the mean of its divisors is an integer number (750806730).

Almost surely, 2^4000640134 is an apocalyptic number.

4000640134 is a deficient number, since it is larger than the sum of its proper divisors (2005813706).

4000640134 is a wasteful number, since it uses less digits than its factorization.

4000640134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831214.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 4000640134 is about 63250.6137045325. The cubic root of 4000640134 is about 1587.4857265669.

The spelling of 4000640134 in words is "four billion, six hundred forty thousand, one hundred thirty-four".