8427378983 has 2 divisors, whose sum is σ = 8427378984. Its totient is φ = 8427378982.

The previous prime is 8427378919. The next prime is 8427378991. The reversal of 8427378983 is 3898737248.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8427378983 - 2⁶ = 8427378919 is a prime.

It is a super-2 number, since 2×8427378983² (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 (8427378913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4213689491 + 4213689492.

It is an arithmetic number, because the mean of its divisors is an integer number (4213689492).

Almost surely, 2^8427378983 is an apocalyptic number.

8427378983 is a deficient number, since it is larger than the sum of its proper divisors (1).

8427378983 is an equidigital number, since it uses as much as digits as its factorization.

8427378983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 59.

The square root of 8427378983 is about 91800.7569848964. The cubic root of 8427378983 is about 2034.9988818117.

The spelling of 8427378983 in words is "eight billion, four hundred twenty-seven million, three hundred seventy-eight thousand, nine hundred eighty-three".