382743817 has 4 divisors (see below), whose sum is σ = 391644880. Its totient is φ = 373842756.

The previous prime is 382743811. The next prime is 382743833. The reversal of 382743817 is 718347283.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 382743817 - 2²³ = 374355209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 8901019 = 382743817 / (3 + 8 + 2 + 7 + 4 + 3 + 8 + 1 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (382743811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4450467 + ... + 4450552.

It is an arithmetic number, because the mean of its divisors is an integer number (97911220).

Almost surely, 2^382743817 is an apocalyptic number.

It is an amenable number.

382743817 is a deficient number, since it is larger than the sum of its proper divisors (8901063).

382743817 is an equidigital number, since it uses as much as digits as its factorization.

382743817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8901062.

The product of its digits is 225792, while the sum is 43.

The square root of 382743817 is about 19563.8395260235. The cubic root of 382743817 is about 726.0547893547.

The spelling of 382743817 in words is "three hundred eighty-two million, seven hundred forty-three thousand, eight hundred seventeen".