392487 has 4 divisors (see below), whose sum is σ = 523320. Its totient is φ = 261656.

The previous prime is 392477. The next prime is 392489. The reversal of 392487 is 784293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784293 = 3 ⋅261431.

It is a cyclic number.

It is not a de Polignac number, because 392487 - 2⁶ = 392423 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 392487.

It is not an unprimeable number, because it can be changed into a prime (392489) by changing a digit.

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, 65412 + ... + 65417.

It is an arithmetic number, because the mean of its divisors is an integer number (130830).

2³⁹²⁴⁸⁷ is an apocalyptic number.

392487 is a deficient number, since it is larger than the sum of its proper divisors (130833).

392487 is a wasteful number, since it uses less digits than its factorization.

392487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130832.

The product of its digits is 12096, while the sum is 33.

The square root of 392487 is about 626.4878290917. The cubic root of 392487 is about 73.2164091733.

The spelling of 392487 in words is "three hundred ninety-two thousand, four hundred eighty-seven".