383649040 has 20 divisors (see below), whose sum is σ = 891984204. Its totient is φ = 153459584.

The previous prime is 383649017. The next prime is 383649073. The reversal of 383649040 is 40946383.

It can be written as a sum of positive squares in 2 ways, for example, as 112190464 + 271458576 = 10592^2 + 16476^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2397727 + ... + 2397886.

Almost surely, 2^383649040 is an apocalyptic number.

It is an amenable number.

383649040 is an abundant number, since it is smaller than the sum of its proper divisors (508335164).

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

383649040 is a wasteful number, since it uses less digits than its factorization.

383649040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4795626 (or 4795620 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 383649040 is about 19586.9609689712. The cubic root of 383649040 is about 726.6267333029.

The spelling of 383649040 in words is "three hundred eighty-three million, six hundred forty-nine thousand, forty".