340404047 has 2 divisors, whose sum is σ = 340404048. Its totient is φ = 340404046.

The previous prime is 340404011. The next prime is 340404049. The reversal of 340404047 is 740404043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340404047 - 2¹² = 340399951 is a prime.

Together with 340404049, 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 (340404049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170202023 + 170202024.

It is an arithmetic number, because the mean of its divisors is an integer number (170202024).

Almost surely, 2^340404047 is an apocalyptic number.

340404047 is a deficient number, since it is larger than the sum of its proper divisors (1).

340404047 is an equidigital number, since it uses as much as digits as its factorization.

340404047 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 340404047 is about 18450.0419240716. The cubic root of 340404047 is about 698.2295716151.

The spelling of 340404047 in words is "three hundred forty million, four hundred four thousand, forty-seven".