392281 has 2 divisors, whose sum is σ = 392282. Its totient is φ = 392280.

The previous prime is 392279. The next prime is 392297. The reversal of 392281 is 182293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266256 + 126025 = 516^2 + 355^2 .

It is a cyclic number.

It is not a de Polignac number, because 392281 - 2¹ = 392279 is a prime.

It is a super-2 number, since 2×392281² = 307768765922, which contains 22 as substring.

Together with 392279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (392201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196140 + 196141.

It is an arithmetic number, because the mean of its divisors is an integer number (196141).

2³⁹²²⁸¹ is an apocalyptic number.

It is an amenable number.

392281 is a deficient number, since it is larger than the sum of its proper divisors (1).

392281 is an equidigital number, since it uses as much as digits as its factorization.

392281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 392281 is about 626.3233988923. The cubic root of 392281 is about 73.2035975219.

The spelling of 392281 in words is "three hundred ninety-two thousand, two hundred eighty-one".