239943465 has 20 divisors (see below), whose sum is σ = 430121604. Its totient is φ = 127969632.

The previous prime is 239943463. The next prime is 239943467. The reversal of 239943465 is 564349932.

It is an interprime number because it is at equal distance from previous prime (239943463) and next prime (239943467).

It can be written as a sum of positive squares in 2 ways, for example, as 126967824 + 112975641 = 11268^2 + 10629^2 .

It is not a de Polignac number, because 239943465 - 2¹ = 239943463 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 239943465.

It is not an unprimeable number, because it can be changed into a prime (239943463) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 295822 + ... + 296631.

Almost surely, 2^239943465 is an apocalyptic number.

It is an amenable number.

239943465 is a deficient number, since it is larger than the sum of its proper divisors (190178139).

239943465 is an equidigital number, since it uses as much as digits as its factorization.

239943465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592470 (or 592461 counting only the distinct ones).

The product of its digits is 699840, while the sum is 45.

The square root of 239943465 is about 15490.1086180827. The cubic root of 239943465 is about 621.3977008616.

The spelling of 239943465 in words is "two hundred thirty-nine million, nine hundred forty-three thousand, four hundred sixty-five".