4278047 has 2 divisors, whose sum is σ = 4278048. Its totient is φ = 4278046.

The previous prime is 4278041. The next prime is 4278049. The reversal of 4278047 is 7408724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4278047 - 2¹⁰ = 4277023 is a prime.

It is a super-2 number, since 2×4278047² = 36603372268418, which contains 22 as substring.

Together with 4278049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4278041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139023 + 2139024.

It is an arithmetic number, because the mean of its divisors is an integer number (2139024).

Almost surely, 2^4278047 is an apocalyptic number.

4278047 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278047 is an equidigital number, since it uses as much as digits as its factorization.

4278047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 4278047 is about 2068.3440236092. The cubic root of 4278047 is about 162.3361282917.

The spelling of 4278047 in words is "four million, two hundred seventy-eight thousand, forty-seven".