392988 has 12 divisors (see below), whose sum is σ = 917000. Its totient is φ = 130992.

The previous prime is 392983. The next prime is 393007. The reversal of 392988 is 889293.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392981) by changing a digit.

392988 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16363 + ... + 16386.

2³⁹²⁹⁸⁸ is an apocalyptic number.

It is an amenable number.

392988 is an abundant number, since it is smaller than the sum of its proper divisors (524012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

392988 is a wasteful number, since it uses less digits than its factorization.

392988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32756 (or 32754 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 392988 is about 626.8875497248. The cubic root of 392988 is about 73.2475489090.

The spelling of 392988 in words is "three hundred ninety-two thousand, nine hundred eighty-eight".