4392139447 has 2 divisors, whose sum is σ = 4392139448. Its totient is φ = 4392139446.

The previous prime is 4392139421. The next prime is 4392139459. The reversal of 4392139447 is 7449312934.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4392139447 - 2²⁷ = 4257921719 is a prime.

It is a super-3 number, since 3×4392139447³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4392139397 and 4392139406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4392139847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2196069723 + 2196069724.

It is an arithmetic number, because the mean of its divisors is an integer number (2196069724).

Almost surely, 2^4392139447 is an apocalyptic number.

4392139447 is a deficient number, since it is larger than the sum of its proper divisors (1).

4392139447 is an equidigital number, since it uses as much as digits as its factorization.

4392139447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The square root of 4392139447 is about 66273.2181729543. The cubic root of 4392139447 is about 1637.6661537363. Note that the first 3 decimals are identical.

The spelling of 4392139447 in words is "four billion, three hundred ninety-two million, one hundred thirty-nine thousand, four hundred forty-seven".