3955822920 has 240 divisors, whose sum is σ = 15467350140. Its totient is φ = 904151808.

The previous prime is 3955822907. The next prime is 3955822931. The reversal of 3955822920 is 292285593.

3955822920 is a `hidden beast` number, since 3 + 9 + 558 + 2 + 2 + 92 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3953139876 + 2683044 = 62874^2 + 1638^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 146302 + ... + 171218.

Almost surely, 2^3955822920 is an apocalyptic number.

3955822920 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 3955822920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7733675070).

3955822920 is an abundant number, since it is smaller than the sum of its proper divisors (11511527220).

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

3955822920 is a wasteful number, since it uses less digits than its factorization.

3955822920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24954 (or 24934 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 3955822920 is about 62895.3330542100. Note that the first 3 decimals coincide. The cubic root of 3955822920 is about 1581.5355098612.

The spelling of 3955822920 in words is "three billion, nine hundred fifty-five million, eight hundred twenty-two thousand, nine hundred twenty".