7904393 has 8 divisors (see below), whose sum is σ = 9074880. Its totient is φ = 6744240.

The previous prime is 7904381. The next prime is 7904417. The reversal of 7904393 is 3934097.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7904393 - 2¹⁰ = 7903369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7904333) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863 + ... + 4068.

It is an arithmetic number, because the mean of its divisors is an integer number (1134360).

Almost surely, 2^7904393 is an apocalyptic number.

It is an amenable number.

7904393 is a deficient number, since it is larger than the sum of its proper divisors (1170487).

7904393 is a wasteful number, since it uses less digits than its factorization.

7904393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 7904393 is about 2811.4752355303. The cubic root of 7904393 is about 199.2000799046.

The spelling of 7904393 in words is "seven million, nine hundred four thousand, three hundred ninety-three".