8392354981 has 2 divisors, whose sum is σ = 8392354982. Its totient is φ = 8392354980.

The previous prime is 8392354973. The next prime is 8392355009. The reversal of 8392354981 is 1894532938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6647956225 + 1744398756 = 81535^2 + 41766^2 .

It is a cyclic number.

It is not a de Polignac number, because 8392354981 - 2³ = 8392354973 is a prime.

It is a super-2 number, since 2×8392354981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8392354381) 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 as a sum of consecutive naturals, namely, 4196177490 + 4196177491.

It is an arithmetic number, because the mean of its divisors is an integer number (4196177491).

Almost surely, 2^8392354981 is an apocalyptic number.

It is an amenable number.

8392354981 is a deficient number, since it is larger than the sum of its proper divisors (1).

8392354981 is an equidigital number, since it uses as much as digits as its factorization.

8392354981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 52.

The square root of 8392354981 is about 91609.7974072643. The cubic root of 8392354981 is about 2032.1758304568.

The spelling of 8392354981 in words is "eight billion, three hundred ninety-two million, three hundred fifty-four thousand, nine hundred eighty-one".