3897368856 has 96 divisors (see below), whose sum is σ = 10998374400. Its totient is φ = 1245389760.

The previous prime is 3897368851. The next prime is 3897368897. The reversal of 3897368856 is 6588637983.

It is a junction number, because it is equal to n+sod(n) for n = 3897368793 and 3897368802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897368851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230665 + ... + 246983.

It is an arithmetic number, because the mean of its divisors is an integer number (114566400).

Almost surely, 2^3897368856 is an apocalyptic number.

3897368856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3897368856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5499187200).

3897368856 is an abundant number, since it is smaller than the sum of its proper divisors (7101005544).

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

3897368856 is a wasteful number, since it uses less digits than its factorization.

3897368856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16469 (or 16462 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 63.

The square root of 3897368856 is about 62428.9104181708. The cubic root of 3897368856 is about 1573.7068557202.

The spelling of 3897368856 in words is "three billion, eight hundred ninety-seven million, three hundred sixty-eight thousand, eight hundred fifty-six".