4000472815 has 4 divisors (see below), whose sum is σ = 4800567384. Its totient is φ = 3200378248.

The previous prime is 4000472803. The next prime is 4000472849. The reversal of 4000472815 is 5182740004.

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

It is a cyclic number.

It is not a de Polignac number, because 4000472815 - 2⁷ = 4000472687 is a prime.

It is a Duffinian number.

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, 400047277 + ... + 400047286.

It is an arithmetic number, because the mean of its divisors is an integer number (1200141846).

Almost surely, 2^4000472815 is an apocalyptic number.

4000472815 is a deficient number, since it is larger than the sum of its proper divisors (800094569).

4000472815 is an equidigital number, since it uses as much as digits as its factorization.

4000472815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800094568.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 4000472815 is about 63249.2910236945. The cubic root of 4000472815 is about 1587.4635950897.

The spelling of 4000472815 in words is "four billion, four hundred seventy-two thousand, eight hundred fifteen".