3972748906 has 16 divisors (see below), whose sum is σ = 6834498624. Its totient is φ = 1696588704.

The previous prime is 3972748903. The next prime is 3972748937. The reversal of 3972748906 is 6098472793.

It is not an unprimeable number, because it can be changed into a prime (3972748903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497395 + ... + 505318.

It is an arithmetic number, because the mean of its divisors is an integer number (427156164).

Almost surely, 2^3972748906 is an apocalyptic number.

3972748906 is a deficient number, since it is larger than the sum of its proper divisors (2861749718).

3972748906 is a wasteful number, since it uses less digits than its factorization.

3972748906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003005.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The square root of 3972748906 is about 63029.7461997111. The cubic root of 3972748906 is about 1583.7879665192.

The spelling of 3972748906 in words is "three billion, nine hundred seventy-two million, seven hundred forty-eight thousand, nine hundred six".