1004334391 has 2 divisors, whose sum is σ = 1004334392. Its totient is φ = 1004334390.

The previous prime is 1004334379. The next prime is 1004334413. The reversal of 1004334391 is 1934334001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1004334391 - 2⁹ = 1004333879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004314391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502167195 + 502167196.

It is an arithmetic number, because the mean of its divisors is an integer number (502167196).

Almost surely, 2^1004334391 is an apocalyptic number.

1004334391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004334391 is an equidigital number, since it uses as much as digits as its factorization.

1004334391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 1004334391 is about 31691.2352394160. The cubic root of 1004334391 is about 1001.4427145737.

Adding to 1004334391 its reverse (1934334001), we get a palindrome (2938668392).

The spelling of 1004334391 in words is "one billion, four million, three hundred thirty-four thousand, three hundred ninety-one".