404340047 has 2 divisors, whose sum is σ = 404340048. Its totient is φ = 404340046.

The previous prime is 404340043. The next prime is 404340049. The reversal of 404340047 is 740043404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 404340047 - 2² = 404340043 is a prime.

Together with 404340049, 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 = 404339998 and 404340025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404340043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202170023 + 202170024.

It is an arithmetic number, because the mean of its divisors is an integer number (202170024).

Almost surely, 2^404340047 is an apocalyptic number.

404340047 is a deficient number, since it is larger than the sum of its proper divisors (1).

404340047 is an equidigital number, since it uses as much as digits as its factorization.

404340047 is an evil number, because the sum of its binary digits is even.

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

The square root of 404340047 is about 20108.2084482930. The cubic root of 404340047 is about 739.4615312090.

The spelling of 404340047 in words is "four hundred four million, three hundred forty thousand, forty-seven".