3897753444 has 72 divisors (see below), whose sum is σ = 10694261760. Its totient is φ = 1189847232.

The previous prime is 3897753383. The next prime is 3897753449. The reversal of 3897753444 is 4443577983.

3897753444 is a `hidden beast` number, since 3 + 89 + 77 + 53 + 444 = 666.

It is a super-2 number, since 2×3897753444² = 30384963820427722272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3897753449) 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, 26647 + ... + 92225.

Almost surely, 2^3897753444 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 3897753444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5347130880).

3897753444 is an abundant number, since it is smaller than the sum of its proper divisors (6796508316).

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

3897753444 is a wasteful number, since it uses less digits than its factorization.

3897753444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65729 (or 65724 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The square root of 3897753444 is about 62431.9905497174. The cubic root of 3897753444 is about 1573.7586178952.

The spelling of 3897753444 in words is "three billion, eight hundred ninety-seven million, seven hundred fifty-three thousand, four hundred forty-four".