346440047 has 2 divisors, whose sum is σ = 346440048. Its totient is φ = 346440046.

The previous prime is 346440023. The next prime is 346440067. The reversal of 346440047 is 740044643.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 346440047 - 2¹² = 346435951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 346439995 and 346440022.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346440067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173220023 + 173220024.

It is an arithmetic number, because the mean of its divisors is an integer number (173220024).

Almost surely, 2^346440047 is an apocalyptic number.

346440047 is a deficient number, since it is larger than the sum of its proper divisors (1).

346440047 is an equidigital number, since it uses as much as digits as its factorization.

346440047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 32.

The square root of 346440047 is about 18612.9000158492. The cubic root of 346440047 is about 702.3323879194.

The spelling of 346440047 in words is "three hundred forty-six million, four hundred forty thousand, forty-seven".