393497 has 4 divisors (see below), whose sum is σ = 423780. Its totient is φ = 363216.

The previous prime is 393487. The next prime is 393517. The reversal of 393497 is 794393.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 190096 + 203401 = 436^2 + 451^2 .

It is a cyclic number.

It is not a de Polignac number, because 393497 - 2⁸ = 393241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (393487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15122 + ... + 15147.

It is an arithmetic number, because the mean of its divisors is an integer number (105945).

2³⁹³⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

393497 is a deficient number, since it is larger than the sum of its proper divisors (30283).

393497 is a wasteful number, since it uses less digits than its factorization.

393497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30282.

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

The square root of 393497 is about 627.2933922815. The cubic root of 393497 is about 73.2791587950.

The spelling of 393497 in words is "three hundred ninety-three thousand, four hundred ninety-seven".