392947 has 4 divisors (see below), whose sum is σ = 397096. Its totient is φ = 388800.

The previous prime is 392929. The next prime is 392957. The reversal of 392947 is 749293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 749293 = 191 ⋅3923.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-392947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1929 + ... + 2122.

It is an arithmetic number, because the mean of its divisors is an integer number (99274).

2³⁹²⁹⁴⁷ is an apocalyptic number.

392947 is a deficient number, since it is larger than the sum of its proper divisors (4149).

392947 is an equidigital number, since it uses as much as digits as its factorization.

392947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4148.

The product of its digits is 13608, while the sum is 34.

The square root of 392947 is about 626.8548476322. The cubic root of 392947 is about 73.2450015421.

The spelling of 392947 in words is "three hundred ninety-two thousand, nine hundred forty-seven".