334993391 has 2 divisors, whose sum is σ = 334993392. Its totient is φ = 334993390.

The previous prime is 334993343. The next prime is 334993447. The reversal of 334993391 is 193399433.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-334993391 is a prime.

It is a super-2 number, since 2×334993391² = 224441144027357762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (334993291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167496695 + 167496696.

It is an arithmetic number, because the mean of its divisors is an integer number (167496696).

Almost surely, 2^334993391 is an apocalyptic number.

334993391 is a deficient number, since it is larger than the sum of its proper divisors (1).

334993391 is an equidigital number, since it uses as much as digits as its factorization.

334993391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 44.

The square root of 334993391 is about 18302.8246727110. The cubic root of 334993391 is about 694.5103885599.

The spelling of 334993391 in words is "three hundred thirty-four million, nine hundred ninety-three thousand, three hundred ninety-one".