393892 has 6 divisors (see below), whose sum is σ = 689318. Its totient is φ = 196944.

The previous prime is 393871. The next prime is 393901. The reversal of 393892 is 298393.

It can be written as a sum of positive squares in only one way, i.e., 254016 + 139876 = 504^2 + 374^2 .

It is a super-3 number, since 3×393892³ = 183338103964764864, which contains 333 as substring.

It is an unprimeable number.

393892 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49233 + ... + 49240.

2³⁹³⁸⁹² is an apocalyptic number.

It is an amenable number.

393892 is a deficient number, since it is larger than the sum of its proper divisors (295426).

393892 is a wasteful number, since it uses less digits than its factorization.

393892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98477 (or 98475 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 393892 is about 627.6081580094. The cubic root of 393892 is about 73.3036702803.

The spelling of 393892 in words is "three hundred ninety-three thousand, eight hundred ninety-two".