334405397 has 2 divisors, whose sum is σ = 334405398. Its totient is φ = 334405396.

The previous prime is 334405381. The next prime is 334405399. The reversal of 334405397 is 793504433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333646756 + 758641 = 18266^2 + 871^2 .

It is a cyclic number.

It is not a de Polignac number, because 334405397 - 2⁴ = 334405381 is a prime.

It is a super-2 number, since 2×334405397² = 223653939085455218, which contains 22 as substring.

Together with 334405399, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_18009767 and since 334405397 and 18009767 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 334405397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (334405399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167202698 + 167202699.

It is an arithmetic number, because the mean of its divisors is an integer number (167202699).

Almost surely, 2^334405397 is an apocalyptic number.

It is an amenable number.

334405397 is a deficient number, since it is larger than the sum of its proper divisors (1).

334405397 is an equidigital number, since it uses as much as digits as its factorization.

334405397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 38.

The square root of 334405397 is about 18286.7546874780. The cubic root of 334405397 is about 694.1038063072.

The spelling of 334405397 in words is "three hundred thirty-four million, four hundred five thousand, three hundred ninety-seven".