382640993 has 16 divisors (see below), whose sum is σ = 457488000. Its totient is φ = 313095552.

The previous prime is 382640989. The next prime is 382641023. The reversal of 382640993 is 399046283.

It is not a de Polignac number, because 382640993 - 2² = 382640989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (382640963) 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, 7478 + ... + 28656.

It is an arithmetic number, because the mean of its divisors is an integer number (28593000).

Almost surely, 2^382640993 is an apocalyptic number.

It is an amenable number.

382640993 is a deficient number, since it is larger than the sum of its proper divisors (74847007).

382640993 is a wasteful number, since it uses less digits than its factorization.

382640993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21304.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 382640993 is about 19561.2114399901. The cubic root of 382640993 is about 725.9897654050.

The spelling of 382640993 in words is "three hundred eighty-two million, six hundred forty thousand, nine hundred ninety-three".