3972147235 has 16 divisors (see below), whose sum is σ = 5460537600. Its totient is φ = 2717247456.

The previous prime is 3972147233. The next prime is 3972147253. The reversal of 3972147235 is 5327412793.

It is not a de Polignac number, because 3972147235 - 2¹ = 3972147233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3972147191 and 3972147200.

It is not an unprimeable number, because it can be changed into a prime (3972147233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120765 + ... + 150094.

It is an arithmetic number, because the mean of its divisors is an integer number (341283600).

Almost surely, 2^3972147235 is an apocalyptic number.

3972147235 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3972147235 is a deficient number, since it is larger than the sum of its proper divisors (1488390365).

3972147235 is a wasteful number, since it uses less digits than its factorization.

3972147235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271290.

The product of its digits is 317520, while the sum is 43.

The square root of 3972147235 is about 63024.9731059046. The cubic root of 3972147235 is about 1583.7080078287.

The spelling of 3972147235 in words is "three billion, nine hundred seventy-two million, one hundred forty-seven thousand, two hundred thirty-five".