239617945 has 8 divisors (see below), whose sum is σ = 328618944. Its totient is φ = 164309424.

The previous prime is 239617927. The next prime is 239617999. The reversal of 239617945 is 549716932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 239617945 - 2¹³ = 239609753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 239617895 and 239617904.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3423079 + ... + 3423148.

It is an arithmetic number, because the mean of its divisors is an integer number (41077368).

Almost surely, 2^239617945 is an apocalyptic number.

It is an amenable number.

239617945 is a deficient number, since it is larger than the sum of its proper divisors (89000999).

239617945 is an equidigital number, since it uses as much as digits as its factorization.

239617945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846239.

The product of its digits is 408240, while the sum is 46.

The square root of 239617945 is about 15479.5977014908. The cubic root of 239617945 is about 621.1165666897.

The spelling of 239617945 in words is "two hundred thirty-nine million, six hundred seventeen thousand, nine hundred forty-five".