396993 has 4 divisors (see below), whose sum is σ = 529328. Its totient is φ = 264660.

The previous prime is 396983. The next prime is 396997. The reversal of 396993 is 399693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 396993 - 2¹⁷ = 265921 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (396997) 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, 66163 + ... + 66168.

It is an arithmetic number, because the mean of its divisors is an integer number (132332).

2³⁹⁶⁹⁹³ is an apocalyptic number.

It is an amenable number.

396993 is a deficient number, since it is larger than the sum of its proper divisors (132335).

396993 is a wasteful number, since it uses less digits than its factorization.

396993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132334.

The product of its digits is 39366, while the sum is 39.

The square root of 396993 is about 630.0738052006. The cubic root of 396993 is about 73.4955339968.

The spelling of 396993 in words is "three hundred ninety-six thousand, nine hundred ninety-three".