4000399976 has 16 divisors (see below), whose sum is σ = 7503440100. Its totient is φ = 1999482624.

The previous prime is 4000399969. The next prime is 4000399981. The reversal of 4000399976 is 6799930004.

It can be written as a sum of positive squares in 2 ways, for example, as 3437476900 + 562923076 = 58630^2 + 23726^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4000399976.

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, 65591 + ... + 110918.

Almost surely, 2^4000399976 is an apocalyptic number.

It is an amenable number.

4000399976 is a deficient number, since it is larger than the sum of its proper divisors (3503040124).

4000399976 is a wasteful number, since it uses less digits than its factorization.

4000399976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179348 (or 179344 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 4000399976 is about 63248.7152122476. The cubic root of 4000399976 is about 1587.4539603983.

The spelling of 4000399976 in words is "four billion, three hundred ninety-nine thousand, nine hundred seventy-six".