383474857 has 4 divisors (see below), whose sum is σ = 388095120. Its totient is φ = 378854596.

The previous prime is 383474851. The next prime is 383474863. The reversal of 383474857 is 758474383.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 758474383 = 18731 ⋅40493.

It is an interprime number because it is at equal distance from previous prime (383474851) and next prime (383474863).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-383474857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 383474857.

It is not an unprimeable number, because it can be changed into a prime (383474851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310007 + ... + 2310172.

It is an arithmetic number, because the mean of its divisors is an integer number (97023780).

Almost surely, 2^383474857 is an apocalyptic number.

It is an amenable number.

383474857 is a deficient number, since it is larger than the sum of its proper divisors (4620263).

383474857 is an equidigital number, since it uses as much as digits as its factorization.

383474857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620262.

The product of its digits is 2257920, while the sum is 49.

The square root of 383474857 is about 19582.5140622955. The cubic root of 383474857 is about 726.5167498108.

The spelling of 383474857 in words is "three hundred eighty-three million, four hundred seventy-four thousand, eight hundred fifty-seven".