6855383393 has 4 divisors (see below), whose sum is σ = 7022587908. Its totient is φ = 6688178880.

The previous prime is 6855383389. The next prime is 6855383411. The reversal of 6855383393 is 3933835586.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3933835586 = 2 ⋅1966917793.

It can be written as a sum of positive squares in 2 ways, for example, as 4041399184 + 2813984209 = 63572^2 + 53047^2 .

It is a cyclic number.

It is not a de Polignac number, because 6855383393 - 2² = 6855383389 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6855383323) 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, 83602196 + ... + 83602277.

It is an arithmetic number, because the mean of its divisors is an integer number (1755646977).

Almost surely, 2^6855383393 is an apocalyptic number.

It is an amenable number.

6855383393 is a deficient number, since it is larger than the sum of its proper divisors (167204515).

6855383393 is a wasteful number, since it uses less digits than its factorization.

6855383393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167204514.

The product of its digits is 6998400, while the sum is 53.

The square root of 6855383393 is about 82797.2426654415. The cubic root of 6855383393 is about 1899.6659978910.

The spelling of 6855383393 in words is "six billion, eight hundred fifty-five million, three hundred eighty-three thousand, three hundred ninety-three".