3897797172 has 24 divisors (see below), whose sum is σ = 9188624256. Its totient is φ = 1285870848.

The previous prime is 3897797149. The next prime is 3897797209. The reversal of 3897797172 is 2717977983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1673148 + ... + 1675475.

It is an arithmetic number, because the mean of its divisors is an integer number (382859344).

Almost surely, 2^3897797172 is an apocalyptic number.

It is an amenable number.

3897797172 is an abundant number, since it is smaller than the sum of its proper divisors (5290827084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3897797172 is a wasteful number, since it uses less digits than its factorization.

3897797172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3348727 (or 3348725 counting only the distinct ones).

The product of its digits is 9335088, while the sum is 60.

The square root of 3897797172 is about 62432.3407538112. The cubic root of 3897797172 is about 1573.7645030852.

The spelling of 3897797172 in words is "three billion, eight hundred ninety-seven million, seven hundred ninety-seven thousand, one hundred seventy-two".