7904291 has 2 divisors, whose sum is σ = 7904292. Its totient is φ = 7904290.

The previous prime is 7904279. The next prime is 7904293. The reversal of 7904291 is 1924097.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7904291 is a prime.

Together with 7904293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7904293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3952145 + 3952146.

It is an arithmetic number, because the mean of its divisors is an integer number (3952146).

Almost surely, 2^7904291 is an apocalyptic number.

7904291 is a deficient number, since it is larger than the sum of its proper divisors (1).

7904291 is an equidigital number, since it uses as much as digits as its factorization.

7904291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 7904291 is about 2811.4570955289. The cubic root of 7904291 is about 199.1992230606.

The spelling of 7904291 in words is "seven million, nine hundred four thousand, two hundred ninety-one".