3959964855 has 160 divisors (see below), whose sum is σ = 9236671488. Its totient is φ = 1573862400.

The previous prime is 3959964839. The next prime is 3959964859. The reversal of 3959964855 is 5584699593.

3959964855 is a `hidden beast` number, since 39 + 599 + 6 + 4 + 8 + 5 + 5 = 666.

It is not a de Polignac number, because 3959964855 - 2⁴ = 3959964839 is a prime.

It is a super-3 number, since 3×3959964855³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 3959964792 and 3959964801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3959964859) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 714495 + ... + 720015.

Almost surely, 2^3959964855 is an apocalyptic number.

3959964855 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3959964855 is an abundant number, since it is smaller than the sum of its proper divisors (5276706633).

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

3959964855 is a wasteful number, since it uses less digits than its factorization.

3959964855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579 (or 5570 counting only the distinct ones).

The product of its digits is 52488000, while the sum is 63.

The square root of 3959964855 is about 62928.2516442337. The cubic root of 3959964855 is about 1582.0872983238.

The spelling of 3959964855 in words is "three billion, nine hundred fifty-nine million, nine hundred sixty-four thousand, eight hundred fifty-five".