3972620099 has 32 divisors (see below), whose sum is σ = 4794716160. Its totient is φ = 3218003712.

The previous prime is 3972620077. The next prime is 3972620117. The reversal of 3972620099 is 9900262793.

It is not a de Polignac number, because 3972620099 - 2¹⁶ = 3972554563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3972620009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8579942 + ... + 8580404.

It is an arithmetic number, because the mean of its divisors is an integer number (149834880).

Almost surely, 2^3972620099 is an apocalyptic number.

3972620099 is a deficient number, since it is larger than the sum of its proper divisors (822096061).

3972620099 is a wasteful number, since it uses less digits than its factorization.

3972620099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 3972620099 is about 63028.7243961037. The cubic root of 3972620099 is about 1583.7708494728.

The spelling of 3972620099 in words is "three billion, nine hundred seventy-two million, six hundred twenty thousand, ninety-nine".