393924748 has 48 divisors (see below), whose sum is σ = 862989120. Its totient is φ = 153409536.

The previous prime is 393924743. The next prime is 393924757. The reversal of 393924748 is 847429393.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (393924743) 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, 465 + ... + 28072.

It is an arithmetic number, because the mean of its divisors is an integer number (17978940).

Almost surely, 2^393924748 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 393924748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431494560).

393924748 is an abundant number, since it is smaller than the sum of its proper divisors (469064372).

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

393924748 is a wasteful number, since it uses less digits than its factorization.

393924748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28594 (or 28592 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 49.

The square root of 393924748 is about 19847.5375802642. The cubic root of 393924748 is about 733.0570170188.

The spelling of 393924748 in words is "three hundred ninety-three million, nine hundred twenty-four thousand, seven hundred forty-eight".