383876393 has 4 divisors (see below), whose sum is σ = 397113540. Its totient is φ = 370639248.

The previous prime is 383876321. The next prime is 383876429. The reversal of 383876393 is 393678383.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 393678383 = 7 ⋅56239769.

It can be written as a sum of positive squares in 2 ways, for example, as 197908624 + 185967769 = 14068^2 + 13637^2 .

It is a cyclic number.

It is not a de Polignac number, because 383876393 - 2²⁸ = 115440937 is a prime.

It is a super-2 number, since 2×383876393² = 294722170205380898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383876293) 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, 6618530 + ... + 6618587.

It is an arithmetic number, because the mean of its divisors is an integer number (99278385).

Almost surely, 2^383876393 is an apocalyptic number.

It is an amenable number.

383876393 is a deficient number, since it is larger than the sum of its proper divisors (13237147).

383876393 is a wasteful number, since it uses less digits than its factorization.

383876393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13237146.

The product of its digits is 1959552, while the sum is 50.

The square root of 383876393 is about 19592.7637917676. The cubic root of 383876393 is about 726.7702395879.

The spelling of 383876393 in words is "three hundred eighty-three million, eight hundred seventy-six thousand, three hundred ninety-three".