8404393 has 8 divisors (see below), whose sum is σ = 8646176. Its totient is φ = 8164800.

The previous prime is 8404387. The next prime is 8404411. The reversal of 8404393 is 3934048.

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 8404393 - 2²¹ = 6307241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8404313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9958 + ... + 10768.

It is an arithmetic number, because the mean of its divisors is an integer number (1080772).

Almost surely, 2^8404393 is an apocalyptic number.

It is an amenable number.

8404393 is a deficient number, since it is larger than the sum of its proper divisors (241783).

8404393 is a wasteful number, since it uses less digits than its factorization.

8404393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 8404393 is about 2899.0331146781. The cubic root of 8404393 is about 203.3147019269.

The spelling of 8404393 in words is "eight million, four hundred four thousand, three hundred ninety-three".