3972236907 has 32 divisors (see below), whose sum is σ = 5501986560. Its totient is φ = 2547399680.

The previous prime is 3972236899. The next prime is 3972236909. The reversal of 3972236907 is 7096322793.

It is not a de Polignac number, because 3972236907 - 2³ = 3972236899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3972236909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3154444 + ... + 3155702.

It is an arithmetic number, because the mean of its divisors is an integer number (171937080).

Almost surely, 2^3972236907 is an apocalyptic number.

3972236907 is a deficient number, since it is larger than the sum of its proper divisors (1529749653).

3972236907 is a wasteful number, since it uses less digits than its factorization.

3972236907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 857304, while the sum is 48.

The square root of 3972236907 is about 63025.6845024312. The cubic root of 3972236907 is about 1583.7199252450.

The spelling of 3972236907 in words is "three billion, nine hundred seventy-two million, two hundred thirty-six thousand, nine hundred seven".