3899543904 has 96 divisors (see below), whose sum is σ = 11423916000. Its totient is φ = 1294106112.

The previous prime is 3899543903. The next prime is 3899543911. The reversal of 3899543904 is 4093459983.

3899543904 is a `hidden beast` number, since 3 + 8 + 9 + 9 + 543 + 90 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×3899543904² = 30412885318447122432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3899543903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188002 + ... + 207710.

It is an arithmetic number, because the mean of its divisors is an integer number (118999125).

Almost surely, 2^3899543904 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 3899543904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5711958000).

3899543904 is an abundant number, since it is smaller than the sum of its proper divisors (7524372096).

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

3899543904 is a wasteful number, since it uses less digits than its factorization.

3899543904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19957 (or 19943 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The square root of 3899543904 is about 62446.3281866916. The cubic root of 3899543904 is about 1573.9995533087. Note that the first 3 decimals are identical.

The spelling of 3899543904 in words is "three billion, eight hundred ninety-nine million, five hundred forty-three thousand, nine hundred four".