239285947 has 4 divisors (see below), whose sum is σ = 240622920. Its totient is φ = 237948976.

The previous prime is 239285933. The next prime is 239285957. The reversal of 239285947 is 749582932.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239285947 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 239285947.

It is not an unprimeable number, because it can be changed into a prime (239285957) 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, 668218 + ... + 668575.

It is an arithmetic number, because the mean of its divisors is an integer number (60155730).

Almost surely, 2^239285947 is an apocalyptic number.

239285947 is a deficient number, since it is larger than the sum of its proper divisors (1336973).

239285947 is a wasteful number, since it uses less digits than its factorization.

239285947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336972.

The product of its digits is 1088640, while the sum is 49.

The square root of 239285947 is about 15468.8702560982. The cubic root of 239285947 is about 620.8295754298.

The spelling of 239285947 in words is "two hundred thirty-nine million, two hundred eighty-five thousand, nine hundred forty-seven".