3921961197 has 32 divisors (see below), whose sum is σ = 6537922560. Its totient is φ = 2031664320.

The previous prime is 3921961193. The next prime is 3921961207. The reversal of 3921961197 is 7911691293.

3921961197 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3921961197 - 2² = 3921961193 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921961193) 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, 59283 + ... + 106575.

It is an arithmetic number, because the mean of its divisors is an integer number (204310080).

Almost surely, 2^3921961197 is an apocalyptic number.

It is an amenable number.

3921961197 is a deficient number, since it is larger than the sum of its proper divisors (2615961363).

3921961197 is a wasteful number, since it uses less digits than its factorization.

3921961197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47673.

The product of its digits is 183708, while the sum is 48.

The square root of 3921961197 is about 62625.5634465671. The cubic root of 3921961197 is about 1577.0099404436.

It can be divided in two parts, 392196 and 1197, that added together give a palindrome (393393).

The spelling of 3921961197 in words is "three billion, nine hundred twenty-one million, nine hundred sixty-one thousand, one hundred ninety-seven".