7838086393 has 8 divisors (see below), whose sum is σ = 7959871296. Its totient is φ = 7716618000.

The previous prime is 7838086387. The next prime is 7838086423. The reversal of 7838086393 is 3936808387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7838086393 is a prime.

It is a super-2 number, since 2×7838086393² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7838086343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28971 + ... + 128512.

It is an arithmetic number, because the mean of its divisors is an integer number (994983912).

Almost surely, 2^7838086393 is an apocalyptic number.

It is an amenable number.

7838086393 is a deficient number, since it is larger than the sum of its proper divisors (121784903).

7838086393 is a wasteful number, since it uses less digits than its factorization.

7838086393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158255.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The square root of 7838086393 is about 88532.9678311983. The cubic root of 7838086393 is about 1986.4151340475.

The spelling of 7838086393 in words is "seven billion, eight hundred thirty-eight million, eighty-six thousand, three hundred ninety-three".