393801 has 4 divisors (see below), whose sum is σ = 525072. Its totient is φ = 262532.

The previous prime is 393797. The next prime is 393847. The reversal of 393801 is 108393.

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, and also an emirpimes, since its reverse is a distinct semiprime: 108393 = 3 ⋅36131.

It is a cyclic number.

It is not a de Polignac number, because 393801 - 2² = 393797 is a prime.

It is an Ulam number.

It is a D-number.

393801 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (393871) 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, 65631 + ... + 65636.

It is an arithmetic number, because the mean of its divisors is an integer number (131268).

2³⁹³⁸⁰¹ is an apocalyptic number.

It is an amenable number.

393801 is a deficient number, since it is larger than the sum of its proper divisors (131271).

393801 is a wasteful number, since it uses less digits than its factorization.

393801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131270.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 393801 is about 627.5356563575. The cubic root of 393801 is about 73.2980247838.

The spelling of 393801 in words is "three hundred ninety-three thousand, eight hundred one".