3869959680 has 240 divisors, whose sum is σ = 13901391504. Its totient is φ = 1031823360.

The previous prime is 3869959673. The next prime is 3869959693. The reversal of 3869959680 is 869599683.

3869959680 is a `hidden beast` number, since 38 + 6 + 9 + 9 + 596 + 8 + 0 = 666.

It is a Cunningham number, because it is equal to 62209²-1.

It is a tau number, because it is divible by the number of its divisors (240).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618970 + ... + 625190.

Almost surely, 2^3869959680 is an apocalyptic number.

3869959680 is a gapful number since it is divisible by the number (30) 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 3869959680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6950695752).

3869959680 is an abundant number, since it is smaller than the sum of its proper divisors (10031431824).

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

3869959680 is an frugal number, since it uses more digits than its factorization.

3869959680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6259 (or 6231 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 63.

The square root of 3869959680 is about 62208.9999919626. Note that the first 5 decimals coincide. The cubic root of 3869959680 is about 1570.0090172173.

The spelling of 3869959680 in words is "three billion, eight hundred sixty-nine million, nine hundred fifty-nine thousand, six hundred eighty".