3972143215 has 8 divisors (see below), whose sum is σ = 4776051168. Its totient is φ = 3171395040.

The previous prime is 3972143183. The next prime is 3972143239. The reversal of 3972143215 is 5123412793.

3972143215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3972143215 - 2⁵ = 3972143183 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 7 ways as a sum of consecutive naturals, for example, 787176 + ... + 792205.

It is an arithmetic number, because the mean of its divisors is an integer number (597006396).

Almost surely, 2^3972143215 is an apocalyptic number.

3972143215 is a deficient number, since it is larger than the sum of its proper divisors (803907953).

3972143215 is a wasteful number, since it uses less digits than its factorization.

3972143215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579889.

The product of its digits is 45360, while the sum is 37.

The square root of 3972143215 is about 63024.9412137766. The cubic root of 3972143215 is about 1583.7074735662.

The spelling of 3972143215 in words is "three billion, nine hundred seventy-two million, one hundred forty-three thousand, two hundred fifteen".