3897319280 has 80 divisors (see below), whose sum is σ = 9527738400. Its totient is φ = 1480442880.

The previous prime is 3897319271. The next prime is 3897319303. The reversal of 3897319280 is 829137983.

It is a happy number.

3897319280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127751 + ... + 155289.

It is an arithmetic number, because the mean of its divisors is an integer number (119096730).

Almost surely, 2^3897319280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3897319280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4763869200).

3897319280 is an abundant number, since it is smaller than the sum of its proper divisors (5630419120).

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

3897319280 is a wasteful number, since it uses less digits than its factorization.

3897319280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27642 (or 27636 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 3897319280 is about 62428.5133572793. The cubic root of 3897319280 is about 1573.7001829772.

The spelling of 3897319280 in words is "three billion, eight hundred ninety-seven million, three hundred nineteen thousand, two hundred eighty".