403440047 has 2 divisors, whose sum is σ = 403440048. Its totient is φ = 403440046.

The previous prime is 403440019. The next prime is 403440049. The reversal of 403440047 is 740044304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 403440047 - 2¹⁴ = 403423663 is a prime.

Together with 403440049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 403439998 and 403440025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403440049) 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, 201720023 + 201720024.

It is an arithmetic number, because the mean of its divisors is an integer number (201720024).

Almost surely, 2^403440047 is an apocalyptic number.

403440047 is a deficient number, since it is larger than the sum of its proper divisors (1).

403440047 is an equidigital number, since it uses as much as digits as its factorization.

403440047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 403440047 is about 20085.8170608019. The cubic root of 403440047 is about 738.9124803350.

The spelling of 403440047 in words is "four hundred three million, four hundred forty thousand, forty-seven".