4000400002 has 16 divisors (see below), whose sum is σ = 6089601600. Its totient is φ = 1970574480.

The previous prime is 4000399981. The next prime is 4000400023. The reversal of 4000400002 is 2000040004.

It is an interprime number because it is at equal distance from previous prime (4000399981) and next prime (4000400023).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197524 + ... + 216832.

It is an arithmetic number, because the mean of its divisors is an integer number (380600100).

Almost surely, 2^4000400002 is an apocalyptic number.

4000400002 is a deficient number, since it is larger than the sum of its proper divisors (2089201598).

4000400002 is a wasteful number, since it uses less digits than its factorization.

4000400002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20841.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 4000400002 is about 63248.7154177854. The cubic root of 4000400002 is about 1587.4539638375.

Adding to 4000400002 its reverse (2000040004), we get a palindrome (6000440006).

The spelling of 4000400002 in words is "four billion, four hundred thousand, two".