3944933540 has 24 divisors (see below), whose sum is σ = 8285622072. Its totient is φ = 1577733120.

The previous prime is 3944933431. The next prime is 3944933543. The reversal of 3944933540 is 453394493.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 118026496 + 3826907044 = 10864^2 + 61862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3944933491 and 3944933500.

It is not an unprimeable number, because it can be changed into a prime (3944933543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183770 + ... + 204110.

It is an arithmetic number, because the mean of its divisors is an integer number (345234253).

Almost surely, 2^3944933540 is an apocalyptic number.

It is an amenable number.

3944933540 is an abundant number, since it is smaller than the sum of its proper divisors (4340688532).

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

3944933540 is a wasteful number, since it uses less digits than its factorization.

3944933540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30047 (or 30045 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 44.

The square root of 3944933540 is about 62808.7059252139. The cubic root of 3944933540 is about 1580.0829871489.

The spelling of 3944933540 in words is "three billion, nine hundred forty-four million, nine hundred thirty-three thousand, five hundred forty".