239473 has 8 divisors (see below), whose sum is σ = 261800. Its totient is φ = 219024.

The previous prime is 239461. The next prime is 239489. The reversal of 239473 is 374932.

It can be written as a sum of positive squares in 4 ways, for example, as 51984 + 187489 = 228^2 + 433^2 .

It is not a de Polignac number, because 239473 - 2⁵ = 239441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (239423) 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, 2143 + ... + 2251.

It is an arithmetic number, because the mean of its divisors is an integer number (32725).

2²³⁹⁴⁷³ is an apocalyptic number.

It is an amenable number.

239473 is a deficient number, since it is larger than the sum of its proper divisors (22327).

239473 is an equidigital number, since it uses as much as digits as its factorization.

239473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 122 counting only the distinct ones).

The product of its digits is 4536, while the sum is 28.

The square root of 239473 is about 489.3597858427. The cubic root of 239473 is about 62.0991303535.

The spelling of 239473 in words is "two hundred thirty-nine thousand, four hundred seventy-three".