340846399 has 2 divisors, whose sum is σ = 340846400. Its totient is φ = 340846398.

The previous prime is 340846327. The next prime is 340846409. The reversal of 340846399 is 993648043.

It is a strong prime.

It is an emirp because it is prime and its reverse (993648043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340846399 - 2¹⁵ = 340813631 is a prime.

It is a super-2 number, since 2×340846399² = 232352535422534402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340846199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170423199 + 170423200.

It is an arithmetic number, because the mean of its divisors is an integer number (170423200).

Almost surely, 2^340846399 is an apocalyptic number.

340846399 is a deficient number, since it is larger than the sum of its proper divisors (1).

340846399 is an equidigital number, since it uses as much as digits as its factorization.

340846399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 340846399 is about 18462.0258639186. The cubic root of 340846399 is about 698.5318883848.

The spelling of 340846399 in words is "three hundred forty million, eight hundred forty-six thousand, three hundred ninety-nine".