393849 has 16 divisors (see below), whose sum is σ = 604800. Its totient is φ = 253008.

The previous prime is 393847. The next prime is 393853. The reversal of 393849 is 948393.

It is not a de Polignac number, because 393849 - 2¹ = 393847 is a prime.

It is not an unprimeable number, because it can be changed into a prime (393847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532 + ... + 1034.

It is an arithmetic number, because the mean of its divisors is an integer number (37800).

2³⁹³⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

393849 is a deficient number, since it is larger than the sum of its proper divisors (210951).

393849 is a wasteful number, since it uses less digits than its factorization.

393849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541 (or 535 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 393849 is about 627.5739000309. The cubic root of 393849 is about 73.3010027365.

It can be divided in two parts, 39384 and 9, that added together give a palindrome (39393).

The spelling of 393849 in words is "three hundred ninety-three thousand, eight hundred forty-nine".