392289 has 8 divisors (see below), whose sum is σ = 535392. Its totient is φ = 255360.

The previous prime is 392281. The next prime is 392297. The reversal of 392289 is 982293.

It is an interprime number because it is at equal distance from previous prime (392281) and next prime (392297).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 392289 - 2³ = 392281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (392281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392 + ... + 1649.

It is an arithmetic number, because the mean of its divisors is an integer number (66924).

2³⁹²²⁸⁹ is an apocalyptic number.

It is an amenable number.

392289 is a deficient number, since it is larger than the sum of its proper divisors (143103).

392289 is a wasteful number, since it uses less digits than its factorization.

392289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087.

The product of its digits is 7776, while the sum is 33.

The square root of 392289 is about 626.3297853368. The cubic root of 392289 is about 73.2040951455.

Adding to 392289 its product of digits (7776), we get a triangular number (400065 = T₈₉₄).

The spelling of 392289 in words is "three hundred ninety-two thousand, two hundred eighty-nine".